tree e89203fa3dd95edfa10ad7e96bcc665fffed128c
parent 5f8b2e61df4a04888eefab2ac76e8ce103d0e465
author Chao Yu <chao@kernel.org> 1630478360 +0800
committer Jaegeuk Kim <jaegeuk@google.com> 1637099801 -0800

f2fs: multidevice: support direct IO

Commit 3c62be17d4f5 ("f2fs: support multiple devices") missed
to support direct IO for multiple device feature, this patch
adds to support the missing part of multidevice feature.

In addition, for multiple device image, we should be aware of
any issued direct write IO rather than just buffered write IO,
so that fsync and syncfs can issue a preflush command to the
device where direct write IO goes, to persist user data for
posix compliant.

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>