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| author | Hyunchul Lee <cheol.lee@lge.com> | 2018-03-08 19:34:38 +0900 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-03-17 13:57:32 +0900 |
| commit | b91050a80cec3daf5a21f78274330df64a4936a3 (patch) | |
| tree | 0195cd219ab9a4f33027b694b64bbfaa970e0e0a /fs/f2fs/f2fs.h | |
| parent | 63189b785960c3346d1af347516b7438f7ada8ec (diff) | |
| download | linux-b91050a80cec3daf5a21f78274330df64a4936a3.tar.bz2 | |
f2fs: add nowait aio support
This patch adds nowait aio support[1].
Return EAGAIN if any of the following checks fail for direct I/O:
- i_rwsem is not lockable
- Blocks are not allocated at the write location
And xfstests generic/471 is passed.
[1]: 6be96d "Introduce RWF_NOWAIT and FMODE_AIO_NOWAIT"
Signed-off-by: Hyunchul Lee <cheol.lee@lge.com>
Reviewed-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 93822634870d..88f2b420de27 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -2877,6 +2877,7 @@ int f2fs_release_page(struct page *page, gfp_t wait); int f2fs_migrate_page(struct address_space *mapping, struct page *newpage, struct page *page, enum migrate_mode mode); #endif +bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len); /* * gc.c @@ -3261,4 +3262,11 @@ static inline bool f2fs_may_encrypt(struct inode *inode) #endif } +static inline bool f2fs_force_buffered_io(struct inode *inode, int rw) +{ + return (f2fs_encrypted_file(inode) || + (rw == WRITE && test_opt(F2FS_I_SB(inode), LFS)) || + F2FS_I_SB(inode)->s_ndevs); +} + #endif |