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Jan Kara dcdbed853d quota: Fix deadlock with suspend and quotas ... This script causes a kernel deadlock: set -e DEVICE=/dev/vg1/linear lvchange -ay $DEVICE mkfs.ext3 $DEVICE mount -t ext3 -o usrquota,grpquota $DEVICE /mnt/test quotacheck -gu /mnt/test umount /mnt/test mount -t ext3 -o usrquota,grpquota $DEVICE /mnt/test quotaon /mnt/test dmsetup suspend $DEVICE setquota -u root 1 2 3 4 /mnt/test & sleep 1 dmsetup resume $DEVICE setquota acquired semaphore s_umount for read and then tried to perform a transaction (and waits because the device is suspended). dmsetup resume tries to acquire s_umount for write before resuming the device (and waits for setquota). Fix the deadlock by grabbing a thawed superblock for quota commands which need it. Reported-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>		13 years ago
..
Kconfig	…
Makefile	…
compat.c	…
dquot.c	quota: Pass information that quota is stored in system file to userspace	13 years ago
netlink.c	…
quota.c	quota: Fix deadlock with suspend and quotas	13 years ago
quota_tree.c	…
quota_tree.h	…
quota_v1.c	…
quota_v2.c	quota: return -ENOMEM when memory allocation fails	14 years ago
quotaio_v1.h	…
quotaio_v2.h	…