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| author | Jan Kara <jack@suse.cz> | 2016-09-30 01:55:32 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2016-09-30 01:55:32 -0400 |
| commit | 4b0524aae0082272737c97d2b160d55d6e8f0b2b (patch) | |
| tree | bcf0c22447beb12238736a2b61066978a81f8004 /fs/ext4/file.c | |
| parent | 9a200d075e5d05be1fcad4547a0f8aee4e2f9a04 (diff) | |
| download | linux-4b0524aae0082272737c97d2b160d55d6e8f0b2b.tar.bz2 | |
ext4: allow unlocked direct IO when pages are cached
Currently we do not allow unlocked (meaning without inode_lock) direct
IO when the file has any pages cached. This check is not needed anymore
as we keep inode lock until ext4_direct_IO_write() and thus can happily
writeback and evict any pages conflicting with current direct IO write.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/file.c')
| -rw-r--r-- | fs/ext4/file.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 34acda78ce25..25342c8dd5d6 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -91,7 +91,6 @@ ext4_unaligned_aio(struct inode *inode, struct iov_iter *from, loff_t pos) static ssize_t ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from) { - struct file *file = iocb->ki_filp; struct inode *inode = file_inode(iocb->ki_filp); struct blk_plug plug; int o_direct = iocb->ki_flags & IOCB_DIRECT; @@ -138,7 +137,7 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from) /* check whether we do a DIO overwrite or not */ if (ext4_should_dioread_nolock(inode) && !unaligned_aio && - !file->f_mapping->nrpages && pos + length <= i_size_read(inode)) { + pos + length <= i_size_read(inode)) { struct ext4_map_blocks map; unsigned int blkbits = inode->i_blkbits; int err, len; |