Signed-off-by: Mark Fasheh <[email protected]>
---
 fs/nilfs2/alloc.c   | 10 ++++-----
 fs/nilfs2/bmap.c    |  4 ++--
 fs/nilfs2/btnode.c  |  6 +++---
 fs/nilfs2/btree.c   | 12 +++++------
 fs/nilfs2/cpfile.c  |  6 +++---
 fs/nilfs2/dat.c     |  2 +-
 fs/nilfs2/dir.c     | 24 ++++++++++-----------
 fs/nilfs2/direct.c  |  4 ++--
 fs/nilfs2/file.c    | 19 ++++++++--------
 fs/nilfs2/gcinode.c |  6 +++---
 fs/nilfs2/ifile.c   |  2 +-
 fs/nilfs2/inode.c   | 62 ++++++++++++++++++++++++++---------------------------
 fs/nilfs2/ioctl.c   | 60 +++++++++++++++++++++++++--------------------------
 fs/nilfs2/mdt.c     | 10 ++++-----
 fs/nilfs2/mdt.h     |  2 +-
 fs/nilfs2/namei.c   | 54 +++++++++++++++++++++++-----------------------
 fs/nilfs2/page.c    |  2 +-
 fs/nilfs2/sufile.c  | 20 ++++++++---------
 fs/nilfs2/sufile.h  |  2 +-
 19 files changed, 154 insertions(+), 153 deletions(-)

diff --git a/fs/nilfs2/alloc.c b/fs/nilfs2/alloc.c
index 03b8ba933eb2..3b3af2e7b2fb 100644
--- a/fs/nilfs2/alloc.c
+++ b/fs/nilfs2/alloc.c
@@ -622,7 +622,7 @@ void nilfs_palloc_commit_free_entry(struct inode *inode,
        lock = nilfs_mdt_bgl_lock(inode, group);
 
        if (!nilfs_clear_bit_atomic(lock, group_offset, bitmap))
-               nilfs_msg(inode->i_sb, KERN_WARNING,
+               nilfs_msg(inode_sb(inode), KERN_WARNING,
                          "%s (ino=%lu): entry number %llu already freed",
                          __func__, inode->i_ino,
                          (unsigned long long)req->pr_entry_nr);
@@ -663,7 +663,7 @@ void nilfs_palloc_abort_alloc_entry(struct inode *inode,
        lock = nilfs_mdt_bgl_lock(inode, group);
 
        if (!nilfs_clear_bit_atomic(lock, group_offset, bitmap))
-               nilfs_msg(inode->i_sb, KERN_WARNING,
+               nilfs_msg(inode_sb(inode), KERN_WARNING,
                          "%s (ino=%lu): entry number %llu already freed",
                          __func__, inode->i_ino,
                          (unsigned long long)req->pr_entry_nr);
@@ -772,7 +772,7 @@ int nilfs_palloc_freev(struct inode *inode, __u64 
*entry_nrs, size_t nitems)
                do {
                        if (!nilfs_clear_bit_atomic(lock, group_offset,
                                                    bitmap)) {
-                               nilfs_msg(inode->i_sb, KERN_WARNING,
+                               nilfs_msg(inode_sb(inode), KERN_WARNING,
                                          "%s (ino=%lu): entry number %llu 
already freed",
                                          __func__, inode->i_ino,
                                          (unsigned long long)entry_nrs[j]);
@@ -817,7 +817,7 @@ int nilfs_palloc_freev(struct inode *inode, __u64 
*entry_nrs, size_t nitems)
                        ret = nilfs_palloc_delete_entry_block(inode,
                                                              last_nrs[k]);
                        if (ret && ret != -ENOENT)
-                               nilfs_msg(inode->i_sb, KERN_WARNING,
+                               nilfs_msg(inode_sb(inode), KERN_WARNING,
                                          "error %d deleting block that object 
(entry=%llu, ino=%lu) belongs to",
                                          ret, (unsigned long long)last_nrs[k],
                                          inode->i_ino);
@@ -835,7 +835,7 @@ int nilfs_palloc_freev(struct inode *inode, __u64 
*entry_nrs, size_t nitems)
                if (nfree == nilfs_palloc_entries_per_group(inode)) {
                        ret = nilfs_palloc_delete_bitmap_block(inode, group);
                        if (ret && ret != -ENOENT)
-                               nilfs_msg(inode->i_sb, KERN_WARNING,
+                               nilfs_msg(inode_sb(inode), KERN_WARNING,
                                          "error %d deleting bitmap block of 
group=%lu, ino=%lu",
                                          ret, group, inode->i_ino);
                }
diff --git a/fs/nilfs2/bmap.c b/fs/nilfs2/bmap.c
index 01fb1831ca25..9d466fb6e65f 100644
--- a/fs/nilfs2/bmap.c
+++ b/fs/nilfs2/bmap.c
@@ -30,7 +30,7 @@
 
 struct inode *nilfs_bmap_get_dat(const struct nilfs_bmap *bmap)
 {
-       struct the_nilfs *nilfs = bmap->b_inode->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(bmap->b_inode)->s_fs_info;
 
        return nilfs->ns_dat;
 }
@@ -41,7 +41,7 @@ static int nilfs_bmap_convert_error(struct nilfs_bmap *bmap,
        struct inode *inode = bmap->b_inode;
 
        if (err == -EINVAL) {
-               __nilfs_error(inode->i_sb, fname,
+               __nilfs_error(inode_sb(inode), fname,
                              "broken bmap (inode number=%lu)", inode->i_ino);
                err = -EIO;
        }
diff --git a/fs/nilfs2/btnode.c b/fs/nilfs2/btnode.c
index c21e0b4454a6..87bc94f23271 100644
--- a/fs/nilfs2/btnode.c
+++ b/fs/nilfs2/btnode.c
@@ -51,7 +51,7 @@ nilfs_btnode_create_block(struct address_space *btnc, __u64 
blocknr)
                BUG();
        }
        memset(bh->b_data, 0, i_blocksize(inode));
-       bh->b_bdev = inode->i_sb->s_bdev;
+       bh->b_bdev = inode_sb(inode)->s_bdev;
        bh->b_blocknr = blocknr;
        set_buffer_mapped(bh);
        set_buffer_uptodate(bh);
@@ -83,7 +83,7 @@ int nilfs_btnode_submit_block(struct address_space *btnc, 
__u64 blocknr,
        if (pblocknr == 0) {
                pblocknr = blocknr;
                if (inode->i_ino != NILFS_DAT_INO) {
-                       struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+                       struct the_nilfs *nilfs = inode_sb(inode)->s_fs_info;
 
                        /* blocknr is a virtual block number */
                        err = nilfs_dat_translate(nilfs->ns_dat, blocknr,
@@ -110,7 +110,7 @@ int nilfs_btnode_submit_block(struct address_space *btnc, 
__u64 blocknr,
                goto found;
        }
        set_buffer_mapped(bh);
-       bh->b_bdev = inode->i_sb->s_bdev;
+       bh->b_bdev = inode_sb(inode)->s_bdev;
        bh->b_blocknr = pblocknr; /* set block address for read */
        bh->b_end_io = end_buffer_read_sync;
        get_bh(bh);
diff --git a/fs/nilfs2/btree.c b/fs/nilfs2/btree.c
index 16a7a67a11c9..e8c90e0b3f1f 100644
--- a/fs/nilfs2/btree.c
+++ b/fs/nilfs2/btree.c
@@ -360,7 +360,7 @@ static int nilfs_btree_node_broken(const struct 
nilfs_btree_node *node,
                     (flags & NILFS_BTREE_NODE_ROOT) ||
                     nchildren < 0 ||
                     nchildren > NILFS_BTREE_NODE_NCHILDREN_MAX(size))) {
-               nilfs_msg(inode->i_sb, KERN_CRIT,
+               nilfs_msg(inode_sb(inode), KERN_CRIT,
                          "bad btree node (ino=%lu, blocknr=%llu): level = %d, 
flags = 0x%x, nchildren = %d",
                          inode->i_ino, (unsigned long long)blocknr, level,
                          flags, nchildren);
@@ -390,7 +390,7 @@ static int nilfs_btree_root_broken(const struct 
nilfs_btree_node *node,
                     level >= NILFS_BTREE_LEVEL_MAX ||
                     nchildren < 0 ||
                     nchildren > NILFS_BTREE_ROOT_NCHILDREN_MAX)) {
-               nilfs_msg(inode->i_sb, KERN_CRIT,
+               nilfs_msg(inode_sb(inode), KERN_CRIT,
                          "bad btree root (ino=%lu): level = %d, flags = 0x%x, 
nchildren = %d",
                          inode->i_ino, level, flags, nchildren);
                ret = 1;
@@ -459,7 +459,7 @@ static int nilfs_btree_bad_node(const struct nilfs_bmap 
*btree,
 {
        if (unlikely(nilfs_btree_node_get_level(node) != level)) {
                dump_stack();
-               nilfs_msg(btree->b_inode->i_sb, KERN_CRIT,
+               nilfs_msg(inode_sb(btree->b_inode), KERN_CRIT,
                          "btree level mismatch (ino=%lu): %d != %d",
                          btree->b_inode->i_ino,
                          nilfs_btree_node_get_level(node), level);
@@ -517,7 +517,7 @@ static int __nilfs_btree_get_block(const struct nilfs_bmap 
*btree, __u64 ptr,
 
  out_no_wait:
        if (!buffer_uptodate(bh)) {
-               nilfs_msg(btree->b_inode->i_sb, KERN_ERR,
+               nilfs_msg(inode_sb(btree->b_inode), KERN_ERR,
                          "I/O error reading b-tree node block (ino=%lu, 
blocknr=%llu)",
                          btree->b_inode->i_ino, (unsigned long long)ptr);
                brelse(bh);
@@ -2083,7 +2083,7 @@ static int nilfs_btree_propagate(struct nilfs_bmap *btree,
        ret = nilfs_btree_do_lookup(btree, path, key, NULL, level + 1, 0);
        if (ret < 0) {
                if (unlikely(ret == -ENOENT))
-                       nilfs_msg(btree->b_inode->i_sb, KERN_CRIT,
+                       nilfs_msg(inode_sb(btree->b_inode), KERN_CRIT,
                                  "writing node/leaf block does not appear in 
b-tree (ino=%lu) at key=%llu, level=%d",
                                  btree->b_inode->i_ino,
                                  (unsigned long long)key, level);
@@ -2123,7 +2123,7 @@ static void nilfs_btree_add_dirty_buffer(struct 
nilfs_bmap *btree,
        if (level < NILFS_BTREE_LEVEL_NODE_MIN ||
            level >= NILFS_BTREE_LEVEL_MAX) {
                dump_stack();
-               nilfs_msg(btree->b_inode->i_sb, KERN_WARNING,
+               nilfs_msg(inode_sb(btree->b_inode), KERN_WARNING,
                          "invalid btree level: %d (key=%llu, ino=%lu, 
blocknr=%llu)",
                          level, (unsigned long long)key,
                          btree->b_inode->i_ino,
diff --git a/fs/nilfs2/cpfile.c b/fs/nilfs2/cpfile.c
index a15a1601e931..c63985f7955e 100644
--- a/fs/nilfs2/cpfile.c
+++ b/fs/nilfs2/cpfile.c
@@ -331,7 +331,7 @@ int nilfs_cpfile_delete_checkpoints(struct inode *cpfile,
        int ret, ncps, nicps, nss, count, i;
 
        if (unlikely(start == 0 || start > end)) {
-               nilfs_msg(cpfile->i_sb, KERN_ERR,
+               nilfs_msg(inode_sb(cpfile), KERN_ERR,
                          "cannot delete checkpoints: invalid range [%llu, 
%llu)",
                          (unsigned long long)start, (unsigned long long)end);
                return -EINVAL;
@@ -385,7 +385,7 @@ int nilfs_cpfile_delete_checkpoints(struct inode *cpfile,
                                                                   cpfile, cno);
                                        if (ret == 0)
                                                continue;
-                                       nilfs_msg(cpfile->i_sb, KERN_ERR,
+                                       nilfs_msg(inode_sb(cpfile), KERN_ERR,
                                                  "error %d deleting checkpoint 
block",
                                                  ret);
                                        break;
@@ -918,7 +918,7 @@ int nilfs_cpfile_change_cpmode(struct inode *cpfile, __u64 
cno, int mode)
 
        switch (mode) {
        case NILFS_CHECKPOINT:
-               if (nilfs_checkpoint_is_mounted(cpfile->i_sb, cno))
+               if (nilfs_checkpoint_is_mounted(inode_sb(cpfile), cno))
                        /*
                         * Current implementation does not have to protect
                         * plain read-only mounts since they are exclusive
diff --git a/fs/nilfs2/dat.c b/fs/nilfs2/dat.c
index dffedb2f8817..7f90bce3750b 100644
--- a/fs/nilfs2/dat.c
+++ b/fs/nilfs2/dat.c
@@ -349,7 +349,7 @@ int nilfs_dat_move(struct inode *dat, __u64 vblocknr, 
sector_t blocknr)
        kaddr = kmap_atomic(entry_bh->b_page);
        entry = nilfs_palloc_block_get_entry(dat, vblocknr, entry_bh, kaddr);
        if (unlikely(entry->de_blocknr == cpu_to_le64(0))) {
-               nilfs_msg(dat->i_sb, KERN_CRIT,
+               nilfs_msg(inode_sb(dat), KERN_CRIT,
                          "%s: invalid vblocknr = %llu, [%llu, %llu)",
                          __func__, (unsigned long long)vblocknr,
                          (unsigned long long)le64_to_cpu(entry->de_start),
diff --git a/fs/nilfs2/dir.c b/fs/nilfs2/dir.c
index 582831ab3eb9..c805564d6893 100644
--- a/fs/nilfs2/dir.c
+++ b/fs/nilfs2/dir.c
@@ -70,7 +70,7 @@ static inline __le16 nilfs_rec_len_to_disk(unsigned int len)
  */
 static inline unsigned int nilfs_chunk_size(struct inode *inode)
 {
-       return inode->i_sb->s_blocksize;
+       return inode_sb(inode)->s_blocksize;
 }
 
 static inline void nilfs_put_page(struct page *page)
@@ -125,7 +125,7 @@ static void nilfs_commit_chunk(struct page *page,
 static bool nilfs_check_page(struct page *page)
 {
        struct inode *dir = page->mapping->host;
-       struct super_block *sb = dir->i_sb;
+       struct super_block *sb = inode_sb(dir);
        unsigned int chunk_size = nilfs_chunk_size(dir);
        char *kaddr = page_address(page);
        unsigned int offs, rec_len;
@@ -273,7 +273,7 @@ static int nilfs_readdir(struct file *file, struct 
dir_context *ctx)
 {
        loff_t pos = ctx->pos;
        struct inode *inode = file_inode(file);
-       struct super_block *sb = inode->i_sb;
+       struct super_block *sb = inode_sb(inode);
        unsigned int offset = pos & ~PAGE_MASK;
        unsigned long n = pos >> PAGE_SHIFT;
        unsigned long npages = dir_pages(inode);
@@ -363,8 +363,8 @@ nilfs_find_entry(struct inode *dir, const struct qstr *qstr,
                        kaddr += nilfs_last_byte(dir, n) - reclen;
                        while ((char *) de <= kaddr) {
                                if (de->rec_len == 0) {
-                                       nilfs_error(dir->i_sb,
-                                               "zero-length directory entry");
+                                       nilfs_error(inode_sb(dir),
+                                                   "zero-length directory 
entry");
                                        nilfs_put_page(page);
                                        goto out;
                                }
@@ -378,10 +378,10 @@ nilfs_find_entry(struct inode *dir, const struct qstr 
*qstr,
                        n = 0;
                /* next page is past the blocks we've got */
                if (unlikely(n > (dir->i_blocks >> (PAGE_SHIFT - 9)))) {
-                       nilfs_error(dir->i_sb,
-                              "dir %lu size %lld exceeds block count %llu",
-                              dir->i_ino, dir->i_size,
-                              (unsigned long long)dir->i_blocks);
+                       nilfs_error(inode_sb(dir),
+                                   "dir %lu size %lld exceeds block count 
%llu",
+                                   dir->i_ino, dir->i_size,
+                                   (unsigned long long)dir->i_blocks);
                        goto out;
                }
        } while (n != start);
@@ -487,7 +487,7 @@ int nilfs_add_link(struct dentry *dentry, struct inode 
*inode)
                                goto got_it;
                        }
                        if (de->rec_len == 0) {
-                               nilfs_error(dir->i_sb,
+                               nilfs_error(inode_sb(dir),
                                            "zero-length directory entry");
                                err = -EIO;
                                goto out_unlock;
@@ -559,7 +559,7 @@ int nilfs_delete_entry(struct nilfs_dir_entry *dir, struct 
page *page)
 
        while ((char *)de < (char *)dir) {
                if (de->rec_len == 0) {
-                       nilfs_error(inode->i_sb,
+                       nilfs_error(inode_sb(inode),
                                    "zero-length directory entry");
                        err = -EIO;
                        goto out;
@@ -646,7 +646,7 @@ int nilfs_empty_dir(struct inode *inode)
 
                while ((char *)de <= kaddr) {
                        if (de->rec_len == 0) {
-                               nilfs_error(inode->i_sb,
+                               nilfs_error(inode_sb(inode),
                                            "zero-length directory entry 
(kaddr=%p, de=%p)",
                                            kaddr, de);
                                goto not_empty;
diff --git a/fs/nilfs2/direct.c b/fs/nilfs2/direct.c
index 96e3ed0d9652..5feca9aa47f4 100644
--- a/fs/nilfs2/direct.c
+++ b/fs/nilfs2/direct.c
@@ -337,14 +337,14 @@ static int nilfs_direct_assign(struct nilfs_bmap *bmap,
 
        key = nilfs_bmap_data_get_key(bmap, *bh);
        if (unlikely(key > NILFS_DIRECT_KEY_MAX)) {
-               nilfs_msg(bmap->b_inode->i_sb, KERN_CRIT,
+               nilfs_msg(inode_sb(bmap->b_inode), KERN_CRIT,
                          "%s (ino=%lu): invalid key: %llu", __func__,
                          bmap->b_inode->i_ino, (unsigned long long)key);
                return -EINVAL;
        }
        ptr = nilfs_direct_get_ptr(bmap, key);
        if (unlikely(ptr == NILFS_BMAP_INVALID_PTR)) {
-               nilfs_msg(bmap->b_inode->i_sb, KERN_CRIT,
+               nilfs_msg(inode_sb(bmap->b_inode), KERN_CRIT,
                          "%s (ino=%lu): invalid pointer: %llu", __func__,
                          bmap->b_inode->i_ino, (unsigned long long)ptr);
                return -EINVAL;
diff --git a/fs/nilfs2/file.c b/fs/nilfs2/file.c
index c5fa3dee72fc..a4f813024483 100644
--- a/fs/nilfs2/file.c
+++ b/fs/nilfs2/file.c
@@ -38,13 +38,14 @@ int nilfs_sync_file(struct file *file, loff_t start, loff_t 
end, int datasync)
 
        if (nilfs_inode_dirty(inode)) {
                if (datasync)
-                       err = nilfs_construct_dsync_segment(inode->i_sb, inode,
+                       err = nilfs_construct_dsync_segment(inode_sb(inode),
+                                                           inode,
                                                            start, end);
                else
-                       err = nilfs_construct_segment(inode->i_sb);
+                       err = nilfs_construct_segment(inode_sb(inode));
        }
 
-       nilfs = inode->i_sb->s_fs_info;
+       nilfs = inode_sb(inode)->s_fs_info;
        if (!err)
                err = nilfs_flush_device(nilfs);
 
@@ -59,10 +60,10 @@ static int nilfs_page_mkwrite(struct vm_fault *vmf)
        struct nilfs_transaction_info ti;
        int ret = 0;
 
-       if (unlikely(nilfs_near_disk_full(inode->i_sb->s_fs_info)))
+       if (unlikely(nilfs_near_disk_full(inode_sb(inode)->s_fs_info)))
                return VM_FAULT_SIGBUS; /* -ENOSPC */
 
-       sb_start_pagefault(inode->i_sb);
+       sb_start_pagefault(inode_sb(inode));
        lock_page(page);
        if (page->mapping != inode->i_mapping ||
            page_offset(page) >= i_size_read(inode) || !PageUptodate(page)) {
@@ -99,7 +100,7 @@ static int nilfs_page_mkwrite(struct vm_fault *vmf)
        /*
         * fill hole blocks
         */
-       ret = nilfs_transaction_begin(inode->i_sb, &ti, 1);
+       ret = nilfs_transaction_begin(inode_sb(inode), &ti, 1);
        /* never returns -ENOMEM, but may return -ENOSPC */
        if (unlikely(ret))
                goto out;
@@ -107,16 +108,16 @@ static int nilfs_page_mkwrite(struct vm_fault *vmf)
        file_update_time(vma->vm_file);
        ret = block_page_mkwrite(vma, vmf, nilfs_get_block);
        if (ret) {
-               nilfs_transaction_abort(inode->i_sb);
+               nilfs_transaction_abort(inode_sb(inode));
                goto out;
        }
        nilfs_set_file_dirty(inode, 1 << (PAGE_SHIFT - inode->i_blkbits));
-       nilfs_transaction_commit(inode->i_sb);
+       nilfs_transaction_commit(inode_sb(inode));
 
  mapped:
        wait_for_stable_page(page);
  out:
-       sb_end_pagefault(inode->i_sb);
+       sb_end_pagefault(inode_sb(inode));
        return block_page_mkwrite_return(ret);
 }
 
diff --git a/fs/nilfs2/gcinode.c b/fs/nilfs2/gcinode.c
index 853a831dcde0..af751dd4fa54 100644
--- a/fs/nilfs2/gcinode.c
+++ b/fs/nilfs2/gcinode.c
@@ -79,7 +79,7 @@ int nilfs_gccache_submit_read_data(struct inode *inode, 
sector_t blkoff,
                goto out;
 
        if (pbn == 0) {
-               struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+               struct the_nilfs *nilfs = inode_sb(inode)->s_fs_info;
 
                err = nilfs_dat_translate(nilfs->ns_dat, vbn, &pbn);
                if (unlikely(err)) { /* -EIO, -ENOMEM, -ENOENT */
@@ -95,7 +95,7 @@ int nilfs_gccache_submit_read_data(struct inode *inode, 
sector_t blkoff,
        }
 
        if (!buffer_mapped(bh)) {
-               bh->b_bdev = inode->i_sb->s_bdev;
+               bh->b_bdev = inode_sb(inode)->s_bdev;
                set_buffer_mapped(bh);
        }
        bh->b_blocknr = pbn;
@@ -151,7 +151,7 @@ int nilfs_gccache_wait_and_mark_dirty(struct buffer_head 
*bh)
        if (!buffer_uptodate(bh)) {
                struct inode *inode = bh->b_page->mapping->host;
 
-               nilfs_msg(inode->i_sb, KERN_ERR,
+               nilfs_msg(inode_sb(inode), KERN_ERR,
                          "I/O error reading %s block for GC (ino=%lu, 
vblocknr=%llu)",
                          buffer_nilfs_node(bh) ? "node" : "data",
                          inode->i_ino, (unsigned long long)bh->b_blocknr);
diff --git a/fs/nilfs2/ifile.c b/fs/nilfs2/ifile.c
index b8fa45c20c63..841f7f6c5e29 100644
--- a/fs/nilfs2/ifile.c
+++ b/fs/nilfs2/ifile.c
@@ -141,7 +141,7 @@ int nilfs_ifile_delete_inode(struct inode *ifile, ino_t ino)
 int nilfs_ifile_get_inode_block(struct inode *ifile, ino_t ino,
                                struct buffer_head **out_bh)
 {
-       struct super_block *sb = ifile->i_sb;
+       struct super_block *sb = inode_sb(ifile);
        int err;
 
        if (unlikely(!NILFS_VALID_INODE(sb, ino))) {
diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c
index 6a612d832e7d..88f590eccdaa 100644
--- a/fs/nilfs2/inode.c
+++ b/fs/nilfs2/inode.c
@@ -80,7 +80,7 @@ int nilfs_get_block(struct inode *inode, sector_t blkoff,
                    struct buffer_head *bh_result, int create)
 {
        struct nilfs_inode_info *ii = NILFS_I(inode);
-       struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(inode)->s_fs_info;
        __u64 blknum = 0;
        int err = 0, ret;
        unsigned int maxblocks = bh_result->b_size >> inode->i_blkbits;
@@ -89,7 +89,7 @@ int nilfs_get_block(struct inode *inode, sector_t blkoff,
        ret = nilfs_bmap_lookup_contig(ii->i_bmap, blkoff, &blknum, maxblocks);
        up_read(&NILFS_MDT(nilfs->ns_dat)->mi_sem);
        if (ret >= 0) { /* found */
-               map_bh(bh_result, inode->i_sb, blknum);
+               map_bh(bh_result, inode_sb(inode), blknum);
                if (ret > 0)
                        bh_result->b_size = (ret << inode->i_blkbits);
                goto out;
@@ -99,7 +99,7 @@ int nilfs_get_block(struct inode *inode, sector_t blkoff,
                struct nilfs_transaction_info ti;
 
                bh_result->b_blocknr = 0;
-               err = nilfs_transaction_begin(inode->i_sb, &ti, 1);
+               err = nilfs_transaction_begin(inode_sb(inode), &ti, 1);
                if (unlikely(err))
                        goto out;
                err = nilfs_bmap_insert(ii->i_bmap, blkoff,
@@ -112,21 +112,21 @@ int nilfs_get_block(struct inode *inode, sector_t blkoff,
                                 * However, the page having this block must
                                 * be locked in this case.
                                 */
-                               nilfs_msg(inode->i_sb, KERN_WARNING,
+                               nilfs_msg(inode_sb(inode), KERN_WARNING,
                                          "%s (ino=%lu): a race condition while 
inserting a data block at offset=%llu",
                                          __func__, inode->i_ino,
                                          (unsigned long long)blkoff);
                                err = 0;
                        }
-                       nilfs_transaction_abort(inode->i_sb);
+                       nilfs_transaction_abort(inode_sb(inode));
                        goto out;
                }
                nilfs_mark_inode_dirty_sync(inode);
-               nilfs_transaction_commit(inode->i_sb); /* never fails */
+               nilfs_transaction_commit(inode_sb(inode)); /* never fails */
                /* Error handling should be detailed */
                set_buffer_new(bh_result);
                set_buffer_delay(bh_result);
-               map_bh(bh_result, inode->i_sb, 0);
+               map_bh(bh_result, inode_sb(inode), 0);
                /* Disk block number must be changed to proper value */
 
        } else if (ret == -ENOENT) {
@@ -174,13 +174,13 @@ static int nilfs_writepages(struct address_space *mapping,
        struct inode *inode = mapping->host;
        int err = 0;
 
-       if (sb_rdonly(inode->i_sb)) {
+       if (sb_rdonly(inode_sb(inode))) {
                nilfs_clear_dirty_pages(mapping, false);
                return -EROFS;
        }
 
        if (wbc->sync_mode == WB_SYNC_ALL)
-               err = nilfs_construct_dsync_segment(inode->i_sb, inode,
+               err = nilfs_construct_dsync_segment(inode_sb(inode), inode,
                                                    wbc->range_start,
                                                    wbc->range_end);
        return err;
@@ -191,7 +191,7 @@ static int nilfs_writepage(struct page *page, struct 
writeback_control *wbc)
        struct inode *inode = page->mapping->host;
        int err;
 
-       if (sb_rdonly(inode->i_sb)) {
+       if (sb_rdonly(inode_sb(inode))) {
                /*
                 * It means that filesystem was remounted in read-only
                 * mode because of error or metadata corruption. But we
@@ -207,11 +207,11 @@ static int nilfs_writepage(struct page *page, struct 
writeback_control *wbc)
        unlock_page(page);
 
        if (wbc->sync_mode == WB_SYNC_ALL) {
-               err = nilfs_construct_segment(inode->i_sb);
+               err = nilfs_construct_segment(inode_sb(inode));
                if (unlikely(err))
                        return err;
        } else if (wbc->for_reclaim)
-               nilfs_flush_segment(inode->i_sb, inode->i_ino);
+               nilfs_flush_segment(inode_sb(inode), inode->i_ino);
 
        return 0;
 }
@@ -268,7 +268,7 @@ static int nilfs_write_begin(struct file *file, struct 
address_space *mapping,
 
 {
        struct inode *inode = mapping->host;
-       int err = nilfs_transaction_begin(inode->i_sb, NULL, 1);
+       int err = nilfs_transaction_begin(inode_sb(inode), NULL, 1);
 
        if (unlikely(err))
                return err;
@@ -277,7 +277,7 @@ static int nilfs_write_begin(struct file *file, struct 
address_space *mapping,
                                nilfs_get_block);
        if (unlikely(err)) {
                nilfs_write_failed(mapping, pos + len);
-               nilfs_transaction_abort(inode->i_sb);
+               nilfs_transaction_abort(inode_sb(inode));
        }
        return err;
 }
@@ -296,7 +296,7 @@ static int nilfs_write_end(struct file *file, struct 
address_space *mapping,
        copied = generic_write_end(file, mapping, pos, len, copied, page,
                                   fsdata);
        nilfs_set_file_dirty(inode, nr_dirty);
-       err = nilfs_transaction_commit(inode->i_sb);
+       err = nilfs_transaction_commit(inode_sb(inode));
        return err ? : copied;
 }
 
@@ -339,7 +339,7 @@ static int nilfs_insert_inode_locked(struct inode *inode,
 
 struct inode *nilfs_new_inode(struct inode *dir, umode_t mode)
 {
-       struct super_block *sb = dir->i_sb;
+       struct super_block *sb = inode_sb(dir);
        struct the_nilfs *nilfs = sb->s_fs_info;
        struct inode *inode;
        struct nilfs_inode_info *ii;
@@ -651,7 +651,7 @@ void nilfs_write_inode_common(struct inode *inode,
        raw_inode->i_generation = cpu_to_le32(inode->i_generation);
 
        if (NILFS_ROOT_METADATA_FILE(inode->i_ino)) {
-               struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+               struct the_nilfs *nilfs = inode_sb(inode)->s_fs_info;
 
                /* zero-fill unused portion in the case of super root block */
                raw_inode->i_xattr = 0;
@@ -717,13 +717,13 @@ static void nilfs_truncate_bmap(struct nilfs_inode_info 
*ii,
 
        b -= min_t(__u64, NILFS_MAX_TRUNCATE_BLOCKS, b - from);
        ret = nilfs_bmap_truncate(ii->i_bmap, b);
-       nilfs_relax_pressure_in_lock(ii->vfs_inode.i_sb);
+       nilfs_relax_pressure_in_lock(inode_sb(&ii->vfs_inode));
        if (!ret || (ret == -ENOMEM &&
                     nilfs_bmap_truncate(ii->i_bmap, b) == 0))
                goto repeat;
 
 failed:
-       nilfs_msg(ii->vfs_inode.i_sb, KERN_WARNING,
+       nilfs_msg(inode_sb(&ii->vfs_inode), KERN_WARNING,
                  "error %d truncating bmap (ino=%lu)", ret,
                  ii->vfs_inode.i_ino);
 }
@@ -733,7 +733,7 @@ void nilfs_truncate(struct inode *inode)
        unsigned long blkoff;
        unsigned int blocksize;
        struct nilfs_transaction_info ti;
-       struct super_block *sb = inode->i_sb;
+       struct super_block *sb = inode_sb(inode);
        struct nilfs_inode_info *ii = NILFS_I(inode);
 
        if (!test_bit(NILFS_I_BMAP, &ii->i_state))
@@ -788,7 +788,7 @@ static void nilfs_clear_inode(struct inode *inode)
 void nilfs_evict_inode(struct inode *inode)
 {
        struct nilfs_transaction_info ti;
-       struct super_block *sb = inode->i_sb;
+       struct super_block *sb = inode_sb(inode);
        struct nilfs_inode_info *ii = NILFS_I(inode);
        int ret;
 
@@ -826,7 +826,7 @@ int nilfs_setattr(struct dentry *dentry, struct iattr 
*iattr)
 {
        struct nilfs_transaction_info ti;
        struct inode *inode = d_inode(dentry);
-       struct super_block *sb = inode->i_sb;
+       struct super_block *sb = inode_sb(inode);
        int err;
 
        err = setattr_prepare(dentry, iattr);
@@ -873,7 +873,7 @@ int nilfs_permission(struct inode *inode, int mask)
 
 int nilfs_load_inode_block(struct inode *inode, struct buffer_head **pbh)
 {
-       struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(inode)->s_fs_info;
        struct nilfs_inode_info *ii = NILFS_I(inode);
        int err;
 
@@ -902,7 +902,7 @@ int nilfs_load_inode_block(struct inode *inode, struct 
buffer_head **pbh)
 int nilfs_inode_dirty(struct inode *inode)
 {
        struct nilfs_inode_info *ii = NILFS_I(inode);
-       struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(inode)->s_fs_info;
        int ret = 0;
 
        if (!list_empty(&ii->i_dirty)) {
@@ -917,7 +917,7 @@ int nilfs_inode_dirty(struct inode *inode)
 int nilfs_set_file_dirty(struct inode *inode, unsigned int nr_dirty)
 {
        struct nilfs_inode_info *ii = NILFS_I(inode);
-       struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(inode)->s_fs_info;
 
        atomic_add(nr_dirty, &nilfs->ns_ndirtyblks);
 
@@ -936,7 +936,7 @@ int nilfs_set_file_dirty(struct inode *inode, unsigned int 
nr_dirty)
                         * This will happen when somebody is freeing
                         * this inode.
                         */
-                       nilfs_msg(inode->i_sb, KERN_WARNING,
+                       nilfs_msg(inode_sb(inode), KERN_WARNING,
                                  "cannot set file dirty (ino=%lu): the file is 
being freed",
                                  inode->i_ino);
                        spin_unlock(&nilfs->ns_inode_lock);
@@ -959,7 +959,7 @@ int __nilfs_mark_inode_dirty(struct inode *inode, int flags)
 
        err = nilfs_load_inode_block(inode, &ibh);
        if (unlikely(err)) {
-               nilfs_msg(inode->i_sb, KERN_WARNING,
+               nilfs_msg(inode_sb(inode), KERN_WARNING,
                          "cannot mark inode dirty (ino=%lu): error %d loading 
inode block",
                          inode->i_ino, err);
                return err;
@@ -987,7 +987,7 @@ void nilfs_dirty_inode(struct inode *inode, int flags)
        struct nilfs_mdt_info *mdi = NILFS_MDT(inode);
 
        if (is_bad_inode(inode)) {
-               nilfs_msg(inode->i_sb, KERN_WARNING,
+               nilfs_msg(inode_sb(inode), KERN_WARNING,
                          "tried to mark bad_inode dirty. ignored.");
                dump_stack();
                return;
@@ -996,15 +996,15 @@ void nilfs_dirty_inode(struct inode *inode, int flags)
                nilfs_mdt_mark_dirty(inode);
                return;
        }
-       nilfs_transaction_begin(inode->i_sb, &ti, 0);
+       nilfs_transaction_begin(inode_sb(inode), &ti, 0);
        __nilfs_mark_inode_dirty(inode, flags);
-       nilfs_transaction_commit(inode->i_sb); /* never fails */
+       nilfs_transaction_commit(inode_sb(inode)); /* never fails */
 }
 
 int nilfs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
                 __u64 start, __u64 len)
 {
-       struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(inode)->s_fs_info;
        __u64 logical = 0, phys = 0, size = 0;
        __u32 flags = 0;
        loff_t isize;
diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index 1d2c3d7711fe..7f1877f959d7 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -166,7 +166,7 @@ static int nilfs_ioctl_setflags(struct inode *inode, struct 
file *filp,
            !capable(CAP_LINUX_IMMUTABLE))
                goto out;
 
-       ret = nilfs_transaction_begin(inode->i_sb, &ti, 0);
+       ret = nilfs_transaction_begin(inode_sb(inode), &ti, 0);
        if (ret)
                goto out;
 
@@ -179,7 +179,7 @@ static int nilfs_ioctl_setflags(struct inode *inode, struct 
file *filp,
                nilfs_set_transaction_flag(NILFS_TI_SYNC);
 
        nilfs_mark_inode_dirty(inode);
-       ret = nilfs_transaction_commit(inode->i_sb);
+       ret = nilfs_transaction_commit(inode_sb(inode));
 out:
        inode_unlock(inode);
        mnt_drop_write_file(filp);
@@ -216,7 +216,7 @@ static int nilfs_ioctl_getversion(struct inode *inode, void 
__user *argp)
 static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp,
                                     unsigned int cmd, void __user *argp)
 {
-       struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(inode)->s_fs_info;
        struct nilfs_transaction_info ti;
        struct nilfs_cpmode cpmode;
        int ret;
@@ -234,13 +234,13 @@ static int nilfs_ioctl_change_cpmode(struct inode *inode, 
struct file *filp,
 
        mutex_lock(&nilfs->ns_snapshot_mount_mutex);
 
-       nilfs_transaction_begin(inode->i_sb, &ti, 0);
+       nilfs_transaction_begin(inode_sb(inode), &ti, 0);
        ret = nilfs_cpfile_change_cpmode(
                nilfs->ns_cpfile, cpmode.cm_cno, cpmode.cm_mode);
        if (unlikely(ret < 0))
-               nilfs_transaction_abort(inode->i_sb);
+               nilfs_transaction_abort(inode_sb(inode));
        else
-               nilfs_transaction_commit(inode->i_sb); /* never fails */
+               nilfs_transaction_commit(inode_sb(inode)); /* never fails */
 
        mutex_unlock(&nilfs->ns_snapshot_mount_mutex);
 out:
@@ -271,7 +271,7 @@ static int
 nilfs_ioctl_delete_checkpoint(struct inode *inode, struct file *filp,
                              unsigned int cmd, void __user *argp)
 {
-       struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(inode)->s_fs_info;
        struct nilfs_transaction_info ti;
        __u64 cno;
        int ret;
@@ -287,12 +287,12 @@ nilfs_ioctl_delete_checkpoint(struct inode *inode, struct 
file *filp,
        if (copy_from_user(&cno, argp, sizeof(cno)))
                goto out;
 
-       nilfs_transaction_begin(inode->i_sb, &ti, 0);
+       nilfs_transaction_begin(inode_sb(inode), &ti, 0);
        ret = nilfs_cpfile_delete_checkpoint(nilfs->ns_cpfile, cno);
        if (unlikely(ret < 0))
-               nilfs_transaction_abort(inode->i_sb);
+               nilfs_transaction_abort(inode_sb(inode));
        else
-               nilfs_transaction_commit(inode->i_sb); /* never fails */
+               nilfs_transaction_commit(inode_sb(inode)); /* never fails */
 out:
        mnt_drop_write_file(filp);
        return ret;
@@ -350,7 +350,7 @@ nilfs_ioctl_do_get_cpinfo(struct the_nilfs *nilfs, __u64 
*posp, int flags,
 static int nilfs_ioctl_get_cpstat(struct inode *inode, struct file *filp,
                                  unsigned int cmd, void __user *argp)
 {
-       struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(inode)->s_fs_info;
        struct nilfs_cpstat cpstat;
        int ret;
 
@@ -417,7 +417,7 @@ nilfs_ioctl_do_get_suinfo(struct the_nilfs *nilfs, __u64 
*posp, int flags,
 static int nilfs_ioctl_get_sustat(struct inode *inode, struct file *filp,
                                  unsigned int cmd, void __user *argp)
 {
-       struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(inode)->s_fs_info;
        struct nilfs_sustat sustat;
        int ret;
 
@@ -526,7 +526,7 @@ nilfs_ioctl_do_get_bdescs(struct the_nilfs *nilfs, __u64 
*posp, int flags,
 static int nilfs_ioctl_get_bdescs(struct inode *inode, struct file *filp,
                                  unsigned int cmd, void __user *argp)
 {
-       struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(inode)->s_fs_info;
        struct nilfs_argv argv;
        int ret;
 
@@ -583,7 +583,7 @@ static int nilfs_ioctl_move_inode_block(struct inode *inode,
 
        if (unlikely(ret < 0)) {
                if (ret == -ENOENT)
-                       nilfs_msg(inode->i_sb, KERN_CRIT,
+                       nilfs_msg(inode_sb(inode), KERN_CRIT,
                                  "%s: invalid virtual block address (%s): 
ino=%llu, cno=%llu, offset=%llu, blocknr=%llu, vblocknr=%llu",
                                  __func__, vdesc->vd_flags ? "node" : "data",
                                  (unsigned long long)vdesc->vd_ino,
@@ -594,7 +594,7 @@ static int nilfs_ioctl_move_inode_block(struct inode *inode,
                return ret;
        }
        if (unlikely(!list_empty(&bh->b_assoc_buffers))) {
-               nilfs_msg(inode->i_sb, KERN_CRIT,
+               nilfs_msg(inode_sb(inode), KERN_CRIT,
                          "%s: conflicting %s buffer: ino=%llu, cno=%llu, 
offset=%llu, blocknr=%llu, vblocknr=%llu",
                          __func__, vdesc->vd_flags ? "node" : "data",
                          (unsigned long long)vdesc->vd_ino,
@@ -916,7 +916,7 @@ static int nilfs_ioctl_clean_segments(struct inode *inode, 
struct file *filp,
                ret = PTR_ERR(kbufs[4]);
                goto out;
        }
-       nilfs = inode->i_sb->s_fs_info;
+       nilfs = inode_sb(inode)->s_fs_info;
 
        for (n = 0; n < 4; n++) {
                ret = -EINVAL;
@@ -959,15 +959,15 @@ static int nilfs_ioctl_clean_segments(struct inode 
*inode, struct file *filp,
                goto out_free;
        }
 
-       ret = nilfs_ioctl_move_blocks(inode->i_sb, &argv[0], kbufs[0]);
+       ret = nilfs_ioctl_move_blocks(inode_sb(inode), &argv[0], kbufs[0]);
        if (ret < 0) {
-               nilfs_msg(inode->i_sb, KERN_ERR,
+               nilfs_msg(inode_sb(inode), KERN_ERR,
                          "error %d preparing GC: cannot read source blocks",
                          ret);
        } else {
                if (nilfs_sb_need_update(nilfs))
                        set_nilfs_discontinued(nilfs);
-               ret = nilfs_clean_segments(inode->i_sb, argv, kbufs);
+               ret = nilfs_clean_segments(inode_sb(inode), argv, kbufs);
        }
 
        nilfs_remove_all_gcinodes(nilfs);
@@ -1016,11 +1016,11 @@ static int nilfs_ioctl_sync(struct inode *inode, struct 
file *filp,
        int ret;
        struct the_nilfs *nilfs;
 
-       ret = nilfs_construct_segment(inode->i_sb);
+       ret = nilfs_construct_segment(inode_sb(inode));
        if (ret < 0)
                return ret;
 
-       nilfs = inode->i_sb->s_fs_info;
+       nilfs = inode_sb(inode)->s_fs_info;
        ret = nilfs_flush_device(nilfs);
        if (ret < 0)
                return ret;
@@ -1060,7 +1060,7 @@ static int nilfs_ioctl_resize(struct inode *inode, struct 
file *filp,
        if (copy_from_user(&newsize, argp, sizeof(newsize)))
                goto out_drop_write;
 
-       ret = nilfs_resize_fs(inode->i_sb, newsize);
+       ret = nilfs_resize_fs(inode_sb(inode), newsize);
 
 out_drop_write:
        mnt_drop_write_file(filp);
@@ -1081,7 +1081,7 @@ static int nilfs_ioctl_resize(struct inode *inode, struct 
file *filp,
  */
 static int nilfs_ioctl_trim_fs(struct inode *inode, void __user *argp)
 {
-       struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(inode)->s_fs_info;
        struct request_queue *q = bdev_get_queue(nilfs->ns_bdev);
        struct fstrim_range range;
        int ret;
@@ -1123,7 +1123,7 @@ static int nilfs_ioctl_trim_fs(struct inode *inode, void 
__user *argp)
  */
 static int nilfs_ioctl_set_alloc_range(struct inode *inode, void __user *argp)
 {
-       struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(inode)->s_fs_info;
        __u64 range[2];
        __u64 minseg, maxseg;
        unsigned long segbytes;
@@ -1137,7 +1137,7 @@ static int nilfs_ioctl_set_alloc_range(struct inode 
*inode, void __user *argp)
                goto out;
 
        ret = -ERANGE;
-       if (range[1] > i_size_read(inode->i_sb->s_bdev->bd_inode))
+       if (range[1] > i_size_read(inode_sb(inode)->s_bdev->bd_inode))
                goto out;
 
        segbytes = nilfs->ns_blocks_per_segment * nilfs->ns_blocksize;
@@ -1183,7 +1183,7 @@ static int nilfs_ioctl_get_info(struct inode *inode, 
struct file *filp,
                                                  void *, size_t, size_t))
 
 {
-       struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(inode)->s_fs_info;
        struct nilfs_argv argv;
        int ret;
 
@@ -1229,7 +1229,7 @@ static int nilfs_ioctl_get_info(struct inode *inode, 
struct file *filp,
 static int nilfs_ioctl_set_suinfo(struct inode *inode, struct file *filp,
                                unsigned int cmd, void __user *argp)
 {
-       struct the_nilfs *nilfs = inode->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(inode)->s_fs_info;
        struct nilfs_transaction_info ti;
        struct nilfs_argv argv;
        size_t len;
@@ -1276,13 +1276,13 @@ static int nilfs_ioctl_set_suinfo(struct inode *inode, 
struct file *filp,
                goto out_free;
        }
 
-       nilfs_transaction_begin(inode->i_sb, &ti, 0);
+       nilfs_transaction_begin(inode_sb(inode), &ti, 0);
        ret = nilfs_sufile_set_suinfo(nilfs->ns_sufile, kbuf, argv.v_size,
                        argv.v_nmembs);
        if (unlikely(ret < 0))
-               nilfs_transaction_abort(inode->i_sb);
+               nilfs_transaction_abort(inode_sb(inode));
        else
-               nilfs_transaction_commit(inode->i_sb); /* never fails */
+               nilfs_transaction_commit(inode_sb(inode)); /* never fails */
 
 out_free:
        vfree(kbuf);
diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c
index c6bc1033e7d2..d208de0e8fd4 100644
--- a/fs/nilfs2/mdt.c
+++ b/fs/nilfs2/mdt.c
@@ -78,7 +78,7 @@ static int nilfs_mdt_create_block(struct inode *inode, 
unsigned long block,
                                                     struct buffer_head *,
                                                     void *))
 {
-       struct super_block *sb = inode->i_sb;
+       struct super_block *sb = inode_sb(inode);
        struct nilfs_transaction_info ti;
        struct buffer_head *bh;
        int err;
@@ -153,7 +153,7 @@ nilfs_mdt_submit_block(struct inode *inode, unsigned long 
blkoff,
                unlock_buffer(bh);
                goto failed_bh;
        }
-       map_bh(bh, inode->i_sb, (sector_t)blknum);
+       map_bh(bh, inode_sb(inode), (sector_t)blknum);
 
        bh->b_end_io = end_buffer_read_sync;
        get_bh(bh);
@@ -208,7 +208,7 @@ static int nilfs_mdt_read_block(struct inode *inode, 
unsigned long block,
  out_no_wait:
        err = -EIO;
        if (!buffer_uptodate(first_bh)) {
-               nilfs_msg(inode->i_sb, KERN_ERR,
+               nilfs_msg(inode_sb(inode), KERN_ERR,
                          "I/O error reading meta-data file (ino=%lu, 
block-offset=%lu)",
                          inode->i_ino, block);
                goto failed_bh;
@@ -413,7 +413,7 @@ nilfs_mdt_write_page(struct page *page, struct 
writeback_control *wbc)
        struct super_block *sb;
        int err = 0;
 
-       if (inode && sb_rdonly(inode->i_sb)) {
+       if (inode && sb_rdonly(inode_sb(inode))) {
                /*
                 * It means that filesystem was remounted in read-only
                 * mode because of error or metadata corruption. But we
@@ -431,7 +431,7 @@ nilfs_mdt_write_page(struct page *page, struct 
writeback_control *wbc)
        if (!inode)
                return 0;
 
-       sb = inode->i_sb;
+       sb = inode_sb(inode);
 
        if (wbc->sync_mode == WB_SYNC_ALL)
                err = nilfs_construct_segment(sb);
diff --git a/fs/nilfs2/mdt.h b/fs/nilfs2/mdt.h
index 3f67f3932097..cf9f18dd0b66 100644
--- a/fs/nilfs2/mdt.h
+++ b/fs/nilfs2/mdt.h
@@ -114,7 +114,7 @@ static inline void nilfs_mdt_clear_dirty(struct inode 
*inode)
 
 static inline __u64 nilfs_mdt_cno(struct inode *inode)
 {
-       return ((struct the_nilfs *)inode->i_sb->s_fs_info)->ns_cno;
+       return ((struct the_nilfs *) inode_sb(inode)->s_fs_info)->ns_cno;
 }
 
 static inline spinlock_t *
diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c
index 1a2894aa0194..a66c98a508be 100644
--- a/fs/nilfs2/namei.c
+++ b/fs/nilfs2/namei.c
@@ -70,7 +70,7 @@ nilfs_lookup(struct inode *dir, struct dentry *dentry, 
unsigned int flags)
                return ERR_PTR(-ENAMETOOLONG);
 
        ino = nilfs_inode_by_name(dir, &dentry->d_name);
-       inode = ino ? nilfs_iget(dir->i_sb, NILFS_I(dir)->i_root, ino) : NULL;
+       inode = ino ? nilfs_iget(inode_sb(dir), NILFS_I(dir)->i_root, ino) : 
NULL;
        return d_splice_alias(inode, dentry);
 }
 
@@ -89,7 +89,7 @@ static int nilfs_create(struct inode *dir, struct dentry 
*dentry, umode_t mode,
        struct nilfs_transaction_info ti;
        int err;
 
-       err = nilfs_transaction_begin(dir->i_sb, &ti, 1);
+       err = nilfs_transaction_begin(inode_sb(dir), &ti, 1);
        if (err)
                return err;
        inode = nilfs_new_inode(dir, mode);
@@ -102,9 +102,9 @@ static int nilfs_create(struct inode *dir, struct dentry 
*dentry, umode_t mode,
                err = nilfs_add_nondir(dentry, inode);
        }
        if (!err)
-               err = nilfs_transaction_commit(dir->i_sb);
+               err = nilfs_transaction_commit(inode_sb(dir));
        else
-               nilfs_transaction_abort(dir->i_sb);
+               nilfs_transaction_abort(inode_sb(dir));
 
        return err;
 }
@@ -116,7 +116,7 @@ nilfs_mknod(struct inode *dir, struct dentry *dentry, 
umode_t mode, dev_t rdev)
        struct nilfs_transaction_info ti;
        int err;
 
-       err = nilfs_transaction_begin(dir->i_sb, &ti, 1);
+       err = nilfs_transaction_begin(inode_sb(dir), &ti, 1);
        if (err)
                return err;
        inode = nilfs_new_inode(dir, mode);
@@ -127,9 +127,9 @@ nilfs_mknod(struct inode *dir, struct dentry *dentry, 
umode_t mode, dev_t rdev)
                err = nilfs_add_nondir(dentry, inode);
        }
        if (!err)
-               err = nilfs_transaction_commit(dir->i_sb);
+               err = nilfs_transaction_commit(inode_sb(dir));
        else
-               nilfs_transaction_abort(dir->i_sb);
+               nilfs_transaction_abort(inode_sb(dir));
 
        return err;
 }
@@ -138,7 +138,7 @@ static int nilfs_symlink(struct inode *dir, struct dentry 
*dentry,
                         const char *symname)
 {
        struct nilfs_transaction_info ti;
-       struct super_block *sb = dir->i_sb;
+       struct super_block *sb = inode_sb(dir);
        unsigned int l = strlen(symname) + 1;
        struct inode *inode;
        int err;
@@ -146,7 +146,7 @@ static int nilfs_symlink(struct inode *dir, struct dentry 
*dentry,
        if (l > sb->s_blocksize)
                return -ENAMETOOLONG;
 
-       err = nilfs_transaction_begin(dir->i_sb, &ti, 1);
+       err = nilfs_transaction_begin(inode_sb(dir), &ti, 1);
        if (err)
                return err;
 
@@ -169,9 +169,9 @@ static int nilfs_symlink(struct inode *dir, struct dentry 
*dentry,
        err = nilfs_add_nondir(dentry, inode);
 out:
        if (!err)
-               err = nilfs_transaction_commit(dir->i_sb);
+               err = nilfs_transaction_commit(inode_sb(dir));
        else
-               nilfs_transaction_abort(dir->i_sb);
+               nilfs_transaction_abort(inode_sb(dir));
 
        return err;
 
@@ -190,7 +190,7 @@ static int nilfs_link(struct dentry *old_dentry, struct 
inode *dir,
        struct nilfs_transaction_info ti;
        int err;
 
-       err = nilfs_transaction_begin(dir->i_sb, &ti, 1);
+       err = nilfs_transaction_begin(inode_sb(dir), &ti, 1);
        if (err)
                return err;
 
@@ -201,11 +201,11 @@ static int nilfs_link(struct dentry *old_dentry, struct 
inode *dir,
        err = nilfs_add_link(dentry, inode);
        if (!err) {
                d_instantiate(dentry, inode);
-               err = nilfs_transaction_commit(dir->i_sb);
+               err = nilfs_transaction_commit(inode_sb(dir));
        } else {
                inode_dec_link_count(inode);
                iput(inode);
-               nilfs_transaction_abort(dir->i_sb);
+               nilfs_transaction_abort(inode_sb(dir));
        }
 
        return err;
@@ -217,7 +217,7 @@ static int nilfs_mkdir(struct inode *dir, struct dentry 
*dentry, umode_t mode)
        struct nilfs_transaction_info ti;
        int err;
 
-       err = nilfs_transaction_begin(dir->i_sb, &ti, 1);
+       err = nilfs_transaction_begin(inode_sb(dir), &ti, 1);
        if (err)
                return err;
 
@@ -247,9 +247,9 @@ static int nilfs_mkdir(struct inode *dir, struct dentry 
*dentry, umode_t mode)
        unlock_new_inode(inode);
 out:
        if (!err)
-               err = nilfs_transaction_commit(dir->i_sb);
+               err = nilfs_transaction_commit(inode_sb(dir));
        else
-               nilfs_transaction_abort(dir->i_sb);
+               nilfs_transaction_abort(inode_sb(dir));
 
        return err;
 
@@ -283,7 +283,7 @@ static int nilfs_do_unlink(struct inode *dir, struct dentry 
*dentry)
                goto out;
 
        if (!inode->i_nlink) {
-               nilfs_msg(inode->i_sb, KERN_WARNING,
+               nilfs_msg(inode_sb(inode), KERN_WARNING,
                          "deleting nonexistent file (ino=%lu), %d",
                          inode->i_ino, inode->i_nlink);
                set_nlink(inode, 1);
@@ -304,7 +304,7 @@ static int nilfs_unlink(struct inode *dir, struct dentry 
*dentry)
        struct nilfs_transaction_info ti;
        int err;
 
-       err = nilfs_transaction_begin(dir->i_sb, &ti, 0);
+       err = nilfs_transaction_begin(inode_sb(dir), &ti, 0);
        if (err)
                return err;
 
@@ -313,9 +313,9 @@ static int nilfs_unlink(struct inode *dir, struct dentry 
*dentry)
        if (!err) {
                nilfs_mark_inode_dirty(dir);
                nilfs_mark_inode_dirty(d_inode(dentry));
-               err = nilfs_transaction_commit(dir->i_sb);
+               err = nilfs_transaction_commit(inode_sb(dir));
        } else
-               nilfs_transaction_abort(dir->i_sb);
+               nilfs_transaction_abort(inode_sb(dir));
 
        return err;
 }
@@ -326,7 +326,7 @@ static int nilfs_rmdir(struct inode *dir, struct dentry 
*dentry)
        struct nilfs_transaction_info ti;
        int err;
 
-       err = nilfs_transaction_begin(dir->i_sb, &ti, 0);
+       err = nilfs_transaction_begin(inode_sb(dir), &ti, 0);
        if (err)
                return err;
 
@@ -342,9 +342,9 @@ static int nilfs_rmdir(struct inode *dir, struct dentry 
*dentry)
                }
        }
        if (!err)
-               err = nilfs_transaction_commit(dir->i_sb);
+               err = nilfs_transaction_commit(inode_sb(dir));
        else
-               nilfs_transaction_abort(dir->i_sb);
+               nilfs_transaction_abort(inode_sb(dir));
 
        return err;
 }
@@ -365,7 +365,7 @@ static int nilfs_rename(struct inode *old_dir, struct 
dentry *old_dentry,
        if (flags & ~RENAME_NOREPLACE)
                return -EINVAL;
 
-       err = nilfs_transaction_begin(old_dir->i_sb, &ti, 1);
+       err = nilfs_transaction_begin(inode_sb(old_dir), &ti, 1);
        if (unlikely(err))
                return err;
 
@@ -425,7 +425,7 @@ static int nilfs_rename(struct inode *old_dir, struct 
dentry *old_dentry,
        nilfs_mark_inode_dirty(old_dir);
        nilfs_mark_inode_dirty(old_inode);
 
-       err = nilfs_transaction_commit(old_dir->i_sb);
+       err = nilfs_transaction_commit(inode_sb(old_dir));
        return err;
 
 out_dir:
@@ -437,7 +437,7 @@ static int nilfs_rename(struct inode *old_dir, struct 
dentry *old_dentry,
        kunmap(old_page);
        put_page(old_page);
 out:
-       nilfs_transaction_abort(old_dir->i_sb);
+       nilfs_transaction_abort(inode_sb(old_dir));
        return err;
 }
 
diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c
index 68241512d7c1..2c0a5bd69d72 100644
--- a/fs/nilfs2/page.c
+++ b/fs/nilfs2/page.c
@@ -397,7 +397,7 @@ void nilfs_clear_dirty_pages(struct address_space *mapping, 
bool silent)
 void nilfs_clear_dirty_page(struct page *page, bool silent)
 {
        struct inode *inode = page->mapping->host;
-       struct super_block *sb = inode->i_sb;
+       struct super_block *sb = inode_sb(inode);
 
        BUG_ON(!PageLocked(page));
 
diff --git a/fs/nilfs2/sufile.c b/fs/nilfs2/sufile.c
index c7fa139d50e8..c280be52cea3 100644
--- a/fs/nilfs2/sufile.c
+++ b/fs/nilfs2/sufile.c
@@ -180,7 +180,7 @@ int nilfs_sufile_updatev(struct inode *sufile, __u64 
*segnumv, size_t nsegs,
        down_write(&NILFS_MDT(sufile)->mi_sem);
        for (seg = segnumv; seg < segnumv + nsegs; seg++) {
                if (unlikely(*seg >= nilfs_sufile_get_nsegments(sufile))) {
-                       nilfs_msg(sufile->i_sb, KERN_WARNING,
+                       nilfs_msg(inode_sb(sufile), KERN_WARNING,
                                  "%s: invalid segment number: %llu",
                                  __func__, (unsigned long long)*seg);
                        nerr++;
@@ -239,7 +239,7 @@ int nilfs_sufile_update(struct inode *sufile, __u64 segnum, 
int create,
        int ret;
 
        if (unlikely(segnum >= nilfs_sufile_get_nsegments(sufile))) {
-               nilfs_msg(sufile->i_sb, KERN_WARNING,
+               nilfs_msg(inode_sb(sufile), KERN_WARNING,
                          "%s: invalid segment number: %llu",
                          __func__, (unsigned long long)segnum);
                return -EINVAL;
@@ -419,7 +419,7 @@ void nilfs_sufile_do_cancel_free(struct inode *sufile, 
__u64 segnum,
        kaddr = kmap_atomic(su_bh->b_page);
        su = nilfs_sufile_block_get_segment_usage(sufile, segnum, su_bh, kaddr);
        if (unlikely(!nilfs_segment_usage_clean(su))) {
-               nilfs_msg(sufile->i_sb, KERN_WARNING,
+               nilfs_msg(inode_sb(sufile), KERN_WARNING,
                          "%s: segment %llu must be clean", __func__,
                          (unsigned long long)segnum);
                kunmap_atomic(kaddr);
@@ -477,7 +477,7 @@ void nilfs_sufile_do_free(struct inode *sufile, __u64 
segnum,
        kaddr = kmap_atomic(su_bh->b_page);
        su = nilfs_sufile_block_get_segment_usage(sufile, segnum, su_bh, kaddr);
        if (nilfs_segment_usage_clean(su)) {
-               nilfs_msg(sufile->i_sb, KERN_WARNING,
+               nilfs_msg(inode_sb(sufile), KERN_WARNING,
                          "%s: segment %llu is already clean",
                          __func__, (unsigned long long)segnum);
                kunmap_atomic(kaddr);
@@ -575,7 +575,7 @@ int nilfs_sufile_get_stat(struct inode *sufile, struct 
nilfs_sustat *sustat)
 {
        struct buffer_head *header_bh;
        struct nilfs_sufile_header *header;
-       struct the_nilfs *nilfs = sufile->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(sufile)->s_fs_info;
        void *kaddr;
        int ret;
 
@@ -649,7 +649,7 @@ void nilfs_sufile_do_set_error(struct inode *sufile, __u64 
segnum,
 static int nilfs_sufile_truncate_range(struct inode *sufile,
                                       __u64 start, __u64 end)
 {
-       struct the_nilfs *nilfs = sufile->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(sufile)->s_fs_info;
        struct buffer_head *header_bh;
        struct buffer_head *su_bh;
        struct nilfs_segment_usage *su, *su2;
@@ -752,7 +752,7 @@ static int nilfs_sufile_truncate_range(struct inode *sufile,
  */
 int nilfs_sufile_resize(struct inode *sufile, __u64 newnsegs)
 {
-       struct the_nilfs *nilfs = sufile->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(sufile)->s_fs_info;
        struct buffer_head *header_bh;
        struct nilfs_sufile_header *header;
        struct nilfs_sufile_info *sui = NILFS_SUI(sufile);
@@ -825,7 +825,7 @@ ssize_t nilfs_sufile_get_suinfo(struct inode *sufile, __u64 
segnum, void *buf,
        struct nilfs_segment_usage *su;
        struct nilfs_suinfo *si = buf;
        size_t susz = NILFS_MDT(sufile)->mi_entry_size;
-       struct the_nilfs *nilfs = sufile->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(sufile)->s_fs_info;
        void *kaddr;
        unsigned long nsegs, segusages_per_block;
        ssize_t n;
@@ -899,7 +899,7 @@ ssize_t nilfs_sufile_get_suinfo(struct inode *sufile, __u64 
segnum, void *buf,
 ssize_t nilfs_sufile_set_suinfo(struct inode *sufile, void *buf,
                                unsigned int supsz, size_t nsup)
 {
-       struct the_nilfs *nilfs = sufile->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(sufile)->s_fs_info;
        struct buffer_head *header_bh, *bh;
        struct nilfs_suinfo_update *sup, *supend = buf + supsz * nsup;
        struct nilfs_segment_usage *su;
@@ -1025,7 +1025,7 @@ ssize_t nilfs_sufile_set_suinfo(struct inode *sufile, 
void *buf,
  */
 int nilfs_sufile_trim_fs(struct inode *sufile, struct fstrim_range *range)
 {
-       struct the_nilfs *nilfs = sufile->i_sb->s_fs_info;
+       struct the_nilfs *nilfs = inode_sb(sufile)->s_fs_info;
        struct buffer_head *su_bh;
        struct nilfs_segment_usage *su;
        void *kaddr;
diff --git a/fs/nilfs2/sufile.h b/fs/nilfs2/sufile.h
index 673a891350f4..0ed86ae80b32 100644
--- a/fs/nilfs2/sufile.h
+++ b/fs/nilfs2/sufile.h
@@ -26,7 +26,7 @@
 
 static inline unsigned long nilfs_sufile_get_nsegments(struct inode *sufile)
 {
-       return ((struct the_nilfs *)sufile->i_sb->s_fs_info)->ns_nsegments;
+       return ((struct the_nilfs *) inode_sb(sufile)->s_fs_info)->ns_nsegments;
 }
 
 unsigned long nilfs_sufile_get_ncleansegs(struct inode *sufile);
-- 
2.15.1

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