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f2fs: remove allow_outplace_dio()

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We can just check f2fs_lfs_mode() directly.  The block_unaligned_IO()
check is redundant because in LFS mode, f2fs doesn't do direct I/O
writes that aren't block-aligned (due to f2fs_force_buffered_io()
returning true in this case, triggering the fallback to buffered I/O).

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Eric Biggers
2021-07-16 09:39:12 -05:00
committed by Jaegeuk Kim
parent c70a6087b6
commit cef541ebfd
3 changed files with 2 additions and 12 deletions
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2
fs/f2fs/data.c
View File

@@ -3564,7 +3564,7 @@ static ssize_t f2fs_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
if (f2fs_force_buffered_io(inode, iocb, iter))
return 0;
do_opu = allow_outplace_dio(inode, iocb, iter);
do_opu = rw == WRITE && f2fs_lfs_mode(sbi);
trace_f2fs_direct_IO_enter(inode, offset, count, rw);

10
fs/f2fs/f2fs.h
View File

@@ -4307,16 +4307,6 @@ static inline int block_unaligned_IO(struct inode *inode,
return align & blocksize_mask;
}
static inline int allow_outplace_dio(struct inode *inode,
struct kiocb *iocb, struct iov_iter *iter)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
int rw = iov_iter_rw(iter);
return (f2fs_lfs_mode(sbi) && (rw == WRITE) &&
!block_unaligned_IO(inode, iocb, iter));
}
static inline bool f2fs_force_buffered_io(struct inode *inode,
struct kiocb *iocb, struct iov_iter *iter)
{

2
fs/f2fs/file.c
View File

@@ -4422,7 +4422,7 @@ static ssize_t f2fs_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
* back to buffered IO.
*/
if (!f2fs_force_buffered_io(inode, iocb, from) &&
allow_outplace_dio(inode, iocb, from))
f2fs_lfs_mode(F2FS_I_SB(inode)))
goto write;
}
preallocated = true;