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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-05-03 23:26:02 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-08-03 07:47:55 +0200 |
| commit | 4fc891a62cecb43b0be4c2a8f676d74efba6131f (patch) | |
| tree | b263d89a57000b6a36d13005c50f4bd6b29f7f2e /fs | |
| parent | d7825eb34a1a8cf09dd66cf370efcc4a406d49ef (diff) | |
| download | linux-stable-4fc891a62cecb43b0be4c2a8f676d74efba6131f.tar.gz linux-stable-4fc891a62cecb43b0be4c2a8f676d74efba6131f.tar.bz2 linux-stable-4fc891a62cecb43b0be4c2a8f676d74efba6131f.zip | |
f2fs: avoid fsync() failure caused by EAGAIN in writepage()
[ Upstream commit 5b19d284f5195a925dd015a6397bfce184097378 ]
pageout() in MM traslates EAGAIN, so calls handle_write_error()
-> mapping_set_error() -> set_bit(AS_EIO, ...).
file_write_and_wait_range() will see EIO error, which is critical
to return value of fsync() followed by atomic_write failure to user.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/f2fs/data.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 3dbd7ca2988e..a9fec79dc3dd 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1848,7 +1848,13 @@ out: redirty_out: redirty_page_for_writepage(wbc, page); - if (!err) + /* + * pageout() in MM traslates EAGAIN, so calls handle_write_error() + * -> mapping_set_error() -> set_bit(AS_EIO, ...). + * file_write_and_wait_range() will see EIO error, which is critical + * to return value of fsync() followed by atomic_write failure to user. + */ + if (!err || wbc->for_reclaim) return AOP_WRITEPAGE_ACTIVATE; unlock_page(page); return err; |