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quota: Fix double lock in add_dquot_ref() with CONFIG_QUOTA_DEBUG
authorJan Kara <jack@suse.cz>
Tue, 24 Apr 2012 15:08:41 +0000 (17:08 +0200)
committerJan Kara <jack@suse.cz>
Tue, 15 May 2012 21:34:37 +0000 (23:34 +0200)
commitd7e9711760a17aef3a94fc6dff4759fa5961de25
tree260d71f39f9d876347e53d44467e536e4c09ea90tree | snapshot (tar.gz zip)
parentfd2cbd4dfa3db477dd6226d387d3f1911d36a6a9commit | diff
quota: Fix double lock in add_dquot_ref() with CONFIG_QUOTA_DEBUG

When CONFIG_QUOTA_DEBUG is enabled we call inode_get_rsv_space() from
add_dquot_ref() while holding i_lock. But inode_get_rsv_space() is trying
to get i_lock as well resulting in double lock.

Fix the problem by moving inode_get_rsv_space() call out of i_lock.

Reported-and-analyzed-by: Jie Liu <jeff.liu@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
fs/quota/dquot.c diff | blob | blame | history
kernel source for telekom puls (alcatel/mediatek)