inode_lock_shared() -> down_read(&inode->i_rwsem)
inode_lock() -> down_write(&inode->i_rwsem)
Inode is not updated in f2fs_seek_block(), so there is no need
to hold write lock, use read lock for more efficiency.
Signed-off-by: zhangxirui <[email protected]>
---
fs/f2fs/file.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 304d0516d3a4..d600ff48914f 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -418,7 +418,7 @@ static loff_t f2fs_seek_block(struct file *file, loff_t
offset, int whence)
loff_t isize;
int err = 0;
- inode_lock(inode);
+ inode_lock_shared(inode);
isize = i_size_read(inode);
if (offset >= isize)
@@ -483,10 +483,10 @@ static loff_t f2fs_seek_block(struct file *file, loff_t
offset, int whence)
found:
if (whence == SEEK_HOLE && data_ofs > isize)
data_ofs = isize;
- inode_unlock(inode);
+ inode_unlock_shared(inode);
return vfs_setpos(file, data_ofs, maxbytes);
fail:
- inode_unlock(inode);
+ inode_unlock_shared(inode);
return -ENXIO;
}
--
2.39.0
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