From: Chandra Seetharaman
This patch allows mounting filesystems with blocksize smaller than the
PAGE_SIZE.
Signed-off-by: Chandra Seetharaman
Signed-off-by: Chandan Rajendra
---
fs/btrfs/disk-io.c | 6 --
1 file changed, 6 deletions(-)
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk
While at it, this commit changes btrfs_truncate_page() to truncate sectorsized
blocks instead of pages. Hence the function has been renamed to
btrfs_truncate_block().
Signed-off-by: Chandan Rajendra
---
fs/btrfs/ctree.h | 2 +-
fs/btrfs/file.c | 41
This commit brings back functions that set/clear EXTENT_WRITEBACK bits. These
are required to reliably clear PG_writeback page flag.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/extent_io.c | 47 +++
fs/btrfs/inode.c | 40
fs_writepage_fixup_worker().
3. Create separate slab caches for 'extent buffer head' and 'extent buffer'.
4. Add 'leak list' tracking for 'extent buffer' instances.
5. Rename EXTENT_BUFFER_TREE_REF and EXTENT_BUFFER_IN_TREE to
EXTENT_BUFFER_HEAD_TREE_REF and
In the case of subpagesize-blocksize, this patch makes it possible to read
only a single metadata block from the disk instead of all the metadata blocks
that map into a page.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/disk-io.c | 45 +++--
fs/btrfs/disk-io.h | 3 ++
fs
In subpagesize-blocksize scenario it is not sufficient to search using the
first byte of the page to make sure that there are no ordered extents
present across the page. Fix this.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/extent_io.c | 3 ++-
fs/btrfs/inode.c | 6 +++---
2 files changed
In subpagesize-blocksize scenario, if i_size occurs in a block which is not
the last block in the page, then the space to be reserved should be calculated
appropriately.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/inode.c | 33 ++---
1 file changed, 22 insertions
Currently, the code reserves/releases extents in multiples of PAGE_CACHE_SIZE
units. Fix this.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/file.c | 32
1 file changed, 20 insertions(+), 12 deletions(-)
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index
In subpagesize-blocksize scenario a page can have more than one block. So
in addition to PagePrivate2 flag, we would have to track the I/O status of
each block of a page to reliably mark the ordered extent as complete.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/extent_io.c| 19 +--
fs
The code now loops across 'ordered extents' instead of 'extent maps' to figure
out the dirty blocks of the page to be submitted for a write operation.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/extent_io.c | 74
e 8192 2048" \
-c "pwrite 10240 2048" \
-c "sync_range 10240 2048" \
/mnt/btrfs/file.bin
To fix this, we would have to explicitly track the blocks of an ordered extent
that have already been submitted for write I/O.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/extent_io.c
While at it, this commit changes btrfs_truncate_page() to truncate sectorsized
blocks instead of pages. Hence the function has been renamed to
btrfs_truncate_block().
Signed-off-by: Chandan Rajendra
---
fs/btrfs/ctree.h | 2 +-
fs/btrfs/file.c | 41
For the subpagesize-blocksize scenario, This patch adds the ability to write a
single extent buffer to the disk.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/disk-io.c | 20 ++--
fs/btrfs/extent_io.c | 300 ---
2 files changed, 250 insertions
Checksums are applicable to sectorsize units. The current code uses
bio->bv_len units to compute and look up checksums. This works on machines
where sectorsize == PAGE_CACHE_SIZE. This patch makes the checksum
computation and look up code to work with sectorsize units.
Signed-off-by: Chan
From: Chandra Seetharaman
This patch allows mounting filesystems with blocksize smaller than the
PAGE_SIZE.
Signed-off-by: Chandra Seetharaman
Signed-off-by: Chandan Rajendra
---
fs/btrfs/disk-io.c | 6 --
1 file changed, 6 deletions(-)
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk
In subpagesize-blocksize scenario, extent allocations for only some of the
dirty blocks of a page can succeed, while allocation for rest of the blocks
can fail. This patch allows I/O against such partially allocated ordered
extents to be submitted.
Signed-off-by: Chandan Rajendra
---
fs/btrfs
nt buffers in a page from 'struct extent
buffer' to 'struct extent_buffer_head'
Also, this patch moves EXTENT_BUFFER_TREE_REF, EXTENT_BUFFER_DUMMY and
EXTENT_BUFFER_IN_TREE flags from extent_buffer->ebflags to
extent_buffer_head->bflags.
Signed-off-by: Chandra Seethara
In subpagesize-blocksize, we have multiple blocks in a page. Checking for
existence of a page in the page cache isn't a sufficient check, since we
could be truncating a subset of the blocks mapped by the page.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/btrfs_inode.h | 2 --
fs/btrfs/f
Based on original patch from Aneesh Kumar K.V
For the subpagesize-blocksize scenario, a page can contain multiple
blocks. This patch handles this case.
This patch also brings back check_page_locked() to reliably unlock pages in
readpage's end bio function.
Signed-off-by: Chandan Raj
Based on original patch from Aneesh Kumar K.V
For the subpagesize-blocksize scenario, a page can contain multiple
blocks. This patch handles this case.
This patch also brings back check_page_locked() to reliably unlock pages in
readpage's end bio function.
Signed-off-by: Chandan Raj
extent buffer head' and 'extent buffer'.
4. Add 'leak list' tracking for 'extent buffer' instances.
5. Rename EXTENT_BUFFER_TREE_REF and EXTENT_BUFFER_IN_TREE to
EXTENT_BUFFER_HEAD_TREE_REF and EXTENT_BUFFER_HEAD_IN_TREE respectively.
Chandan Rajendra (15
This commit brings back functions that set/clear EXTENT_WRITEBACK bits. These
are required to reliably clear PG_writeback page flag.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/extent_io.c | 47 +++
fs/btrfs/inode.c | 40
In subpagesize-blocksize scenario it is not sufficient to search using the
first byte of the page to make sure that there are no ordered extents
present across the page. Fix this.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/extent_io.c | 3 ++-
fs/btrfs/inode.c | 6 +++---
2 files changed
Currently, the code reserves/releases extents in multiples of PAGE_CACHE_SIZE
units. Fix this.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/file.c | 32
1 file changed, 20 insertions(+), 12 deletions(-)
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index
In subpagesize-blocksize scenario, extent allocations for only some of the
dirty blocks of a page can succeed, while allocation for rest of the blocks
can fail. This patch allows I/O against such partially allocated ordered
extents to be submitted.
Signed-off-by: Chandan Rajendra
---
fs/btrfs
In subpagesize-blocksize, we have multiple blocks in a page. Checking for
existence of a page in the page cache isn't a sufficient check, since we
could be truncating a subset of the blocks mapped by the page.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/btrfs_inode.h | 2 --
fs/btrfs/f
While at it, this commit changes btrfs_truncate_page() to truncate sectorsized
blocks instead of pages. Hence the function has been renamed to
btrfs_truncate_block().
Signed-off-by: Chandan Rajendra
---
fs/btrfs/ctree.h | 2 +-
fs/btrfs/file.c | 41
ed to a page.
Hence this patch adds a new flag (i.e. EXTENT_BUFFER_HEAD_WRITEBACK) and
corresponding code to track the writeback status of the page and to prevent
writes to any of the extent buffers mapped to the page while writeback is
going on.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/ct
The code now loops across 'ordered extents' instead of 'extent maps' to figure
out the dirty blocks of the page to be submitted for a write operation.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/extent_io.c | 74
In the case of subpagesize-blocksize, this patch makes it possible to read
only a single metadata block from the disk instead of all the metadata blocks
that map into a page.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/disk-io.c | 45 +++--
fs/btrfs/disk-io.h | 3 ++
fs
In subpagesize-blocksize scenario a page can have more than one block. So
in addition to PagePrivate2 flag, we would have to track the I/O status of
each block of a page to reliably mark the ordered extent as complete.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/extent_io.c| 19 +--
fs
In subpagesize-blocksize scenario, if i_size occurs in a block which is not
the last block in the page, then the space to be reserved should be calculated
appropriately.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/inode.c | 33 ++---
1 file changed, 22 insertions
From: Chandra Seetharaman
This patch allows mounting filesystems with blocksize smaller than the
PAGE_SIZE.
Signed-off-by: Chandra Seetharaman
Signed-off-by: Chandan Rajendra
---
fs/btrfs/disk-io.c | 6 --
1 file changed, 6 deletions(-)
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk
nt buffers in a page from 'struct extent
buffer' to 'struct extent_buffer_head'
Also, this patch moves EXTENT_BUFFER_TREE_REF, EXTENT_BUFFER_DUMMY and
EXTENT_BUFFER_IN_TREE flags from extent_buffer->ebflags to
extent_buffer_head->bflags.
Signed-off-by: Chandra Seethara
Checksums are applicable to sectorsize units. The current code uses
bio->bv_len units to compute and look up checksums. This works on machines
where sectorsize == PAGE_CACHE_SIZE. This patch makes the checksum
computation and look up code to work with sectorsize units.
Signed-off-by: Chan
For the subpagesize-blocksize scenario, This patch adds the ability to write a
single extent buffer to the disk.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/disk-io.c | 20 ++--
fs/btrfs/extent_io.c | 300 ---
2 files changed, 250 insertions
e 8192 2048" \
-c "pwrite 10240 2048" \
-c "sync_range 10240 2048" \
/mnt/btrfs/file.bin
To fix this, we would have to explicitly track the blocks of an ordered extent
that have already been submitted for write I/O.
Signed-off-by: Chandan Rajendra
---
fs/btrfs/extent_io.c
resolve_one_root() returns the objectid of a tree rather than the logical
address of the root node. Hence using root_bytenr is misleading. Fix this.
Signed-off-by: Chandan Rajendra
---
qgroup-verify.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/qgroup-verify.c b
In BTRFS, BLOCK_SIZE, the basic IO size of the filesystem, is equal to the
PAGE_SIZE of the architecture. Some 64-bit architectures, like PPC64 and
ARM64, can/do have a default PAGE_SIZE of 64K, which means the filesystems
handled in these architectures have a BLOCK_SIZE of 64K.
This works fine as
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