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| author | kib <kib@FreeBSD.org> | 2008-03-23 13:45:24 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2008-03-23 13:45:24 +0000 |
| commit | 5ddf5664ccd9a5fa53eda81e8ec89445bfaf3c41 (patch) | |
| tree | 72ecaa475ca0981f6c6e503a2d9814052b1078e5 /sys/ufs | |
| parent | 5e55dd67176633e7adc6e3726f22960f15941c9a (diff) | |
| download | FreeBSD-src-5ddf5664ccd9a5fa53eda81e8ec89445bfaf3c41.zip FreeBSD-src-5ddf5664ccd9a5fa53eda81e8ec89445bfaf3c41.tar.gz | |
Yield the cpu in the kernel while iterating the list of the
vnodes belonging to the mountpoint. Also, yield when in the
softdep_process_worklist() even when we are not going to sleep due to
buffer drain.
It is believed that the ULE fixed the problem [1], but the yielding
seems to be needed at least for the 4BSD case.
Discussed: on stable@, with bde
Reviewed by: tegge, jeff [1]
MFC after: 2 weeks
Diffstat (limited to 'sys/ufs')
| -rw-r--r-- | sys/ufs/ffs/ffs_softdep.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/ufs/ffs/ffs_softdep.c b/sys/ufs/ffs/ffs_softdep.c index 7cb7b40..255723c 100644 --- a/sys/ufs/ffs/ffs_softdep.c +++ b/sys/ufs/ffs/ffs_softdep.c @@ -857,6 +857,7 @@ softdep_process_worklist(mp, full) */ if (loopcount++ % 128 == 0) { FREE_LOCK(&lk); + uio_yield(); bwillwrite(); ACQUIRE_LOCK(&lk); } |
