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authorJens Axboe <jens.axboe@oracle.com>2009-10-29 06:46:12 -0400
committerJens Axboe <jens.axboe@oracle.com>2009-10-29 06:46:12 -0400
commit592b09a42fc3ae6737a0f3ecf4fee42ecd0296f8 (patch)
treed06ca7165c5dfc5224910993b36a50e54a896831 /scripts/conmakehash.c
parent960cc0f4fef607baabc2232fbd7cce5368a9dcfd (diff)
backing-dev: ensure that a removed bdi no longer has super_block referencing it
When the bdi is being removed, we have to ensure that no super_blocks currently have that cached in sb->s_bdi. Normally this is ensured by the sb having a longer life span than the bdi, but if the device is suddenly yanked, we have to kill this reference. sb->s_bdi is pointed to freed memory at that point. This fixes a problem with sync(1) hanging when a USB stick is pulled without cleanly umounting it first. Reported-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'scripts/conmakehash.c')
0 files changed, 0 insertions, 0 deletions