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| author | Kent Overstreet <kent.overstreet@gmail.com> | 2021-05-18 23:53:43 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@linux.dev> | 2023-10-22 17:09:03 -0400 |
| commit | ef1b20924b0f584740094fdf7166acfb80338f0c (patch) | |
| tree | f8abf635aa829ef4e61243ddcd9bac546455cc12 /fs/bcachefs/fs-io.c | |
| parent | ed34341189478344eb54588ce73f190b86da4d5e (diff) | |
bcachefs: Ratelimiting for writeback IOs
Writeback throttling is a kernel config option and not always enabled.
When it's not enabled we need a fallback, to avoid unbounded memory
pinning and work item backlogs.
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 | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/bcachefs/fs-io.c b/fs/bcachefs/fs-io.c index fbf171a4c191..763195ed0b3c 100644 --- a/fs/bcachefs/fs-io.c +++ b/fs/bcachefs/fs-io.c @@ -997,6 +997,8 @@ static void bch2_writepage_io_done(struct closure *cl) struct bio_vec *bvec; unsigned i; + up(&io->op.c->io_in_flight); + if (io->op.error) { set_bit(EI_INODE_ERROR, &io->inode->ei_flags); @@ -1059,6 +1061,8 @@ static void bch2_writepage_do_io(struct bch_writepage_state *w) { struct bch_writepage_io *io = w->io; + down(&io->op.c->io_in_flight); + w->io = NULL; closure_call(&io->op.cl, bch2_write, NULL, &io->cl); continue_at(&io->cl, bch2_writepage_io_done, NULL); |