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When removing or renaming snaphost, do not delve into request_cleanup().

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The later may need blocks from the underlying device that belongs
to normal files, that should not be locked while snap lock is held.

Reported and tested by:	pho
MFC after:	1 month
This commit is contained in:
Konstantin Belousov 2009-04-04 12:19:52 +00:00
parent 8933fa13b6
commit bc364c4e99
1 changed files with 1 additions and 1 deletions
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2
sys/ufs/ffs/ffs_softdep.c
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@ -3309,7 +3309,7 @@ newdirrem(bp, dp, ip, isrmdir, prevdirremp)
* the number of freefile and freeblks structures.
*/
ACQUIRE_LOCK(&lk);
if (num_dirrem > max_softdeps / 2)
if (!(ip->i_flags & SF_SNAPSHOT) && num_dirrem > max_softdeps / 2)
(void) request_cleanup(ITOV(dp)->v_mount, FLUSH_REMOVE);
num_dirrem += 1;
FREE_LOCK(&lk);