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| author | Kent Overstreet <kent.overstreet@linux.dev> | 2022-10-29 15:54:17 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-22 17:09:45 -0400 |
| commit | 1df3e19996a3b29ed82315bf03cb02ac4e4e70ab (patch) | |
| tree | 745b9032df5c61f7b371071cbfd62622a8e4258c /fs/bcachefs/fs-io.c | |
| parent | a10195764901e0a41e64d596de57a957e7f982f0 (diff) | |
| download | lwn-1df3e19996a3b29ed82315bf03cb02ac4e4e70ab.tar.gz lwn-1df3e19996a3b29ed82315bf03cb02ac4e4e70ab.zip | |
bcachefs: BCH_WRITE_SYNC
This adds a new flag for the write path, BCH_WRITE_SYNC, and switches
the O_DIRECT write path to use it when we're not running asynchronously.
It runs the btree update after the write in the original thread's
context instead of a kworker, cutting context switches in half.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'fs/bcachefs/fs-io.c')
| -rw-r--r-- | fs/bcachefs/fs-io.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/bcachefs/fs-io.c b/fs/bcachefs/fs-io.c index 9e9ada8f007a..dbad24f5f2ea 100644 --- a/fs/bcachefs/fs-io.c +++ b/fs/bcachefs/fs-io.c @@ -2156,6 +2156,8 @@ static long bch2_dio_write_loop(struct dio_write *dio) dio->op.subvol = inode->ei_subvol; dio->op.pos = POS(inode->v.i_ino, (u64) req->ki_pos >> 9); + if (sync) + dio->op.flags |= BCH_WRITE_SYNC; if ((req->ki_flags & IOCB_DSYNC) && !c->opts.journal_flush_disabled) dio->op.flags |= BCH_WRITE_FLUSH; |