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| author | Alasdair G Kergon <agk@redhat.com> | 2005-07-13 00:53:03 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-13 01:19:10 +0200 |
| commit | 436d41087d047b61f8ab0604dc74fff3240a8933 (patch) | |
| tree | 46bab3a0cf02a7514b4faa5470a76326e6f8bc72 /fs/select.c | |
| parent | [PATCH] device-mapper multipath: Flush workqueue when destroying (diff) | |
| download | linux-436d41087d047b61f8ab0604dc74fff3240a8933.tar.xz linux-436d41087d047b61f8ab0604dc74fff3240a8933.zip | |
[PATCH] device-mapper multipath: Avoid possible suspension deadlock
To avoid deadlock when suspending a multipath device after all its paths have
failed, stop queueing any I/O that is about to fail *before* calling
freeze_bdev instead of after.
Instead of setting a multipath 'suspended' flag which would have to be reset
if an error occurs during the process, save the previous queueing state and
leave userspace to restore if it wishes.
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/select.c')
0 files changed, 0 insertions, 0 deletions