diff options
| author | Konstantin Khlebnikov <khlebnikov@yandex-team.ru> | 2019-11-30 17:49:47 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-12-01 06:29:18 -0800 |
| commit | 9266a14033a81b3096feccd10542c20b3f47fe8e (patch) | |
| tree | 7ed6e4a99a3dfa9f55a0e4cc4225a48fde7ce107 /mm/gup.c | |
| parent | a92853b6746fe5ffef20a7c30addf6320561e669 (diff) | |
mm/filemap.c: warn if stale pagecache is left after direct write
generic_file_direct_write() tries to invalidate pagecache after O_DIRECT
write. Unlike to similar code in dio_complete() this silently ignores
error returned from invalidate_inode_pages2_range().
According to comment this code here because not all filesystems call
dio_complete() to do proper invalidation after O_DIRECT write. Noticeable
example is a blkdev_direct_IO().
This patch calls dio_warn_stale_pagecache() if invalidation fails.
Link: http://lkml.kernel.org/r/157270038294.4812.2238891109785106069.stgit@buzz
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/gup.c')
0 files changed, 0 insertions, 0 deletions