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authorTsutomu Itoh <t-itoh@jp.fujitsu.com>2011-01-25 02:51:38 +0000
committerChris Mason <chris.mason@oracle.com>2011-01-28 16:40:37 -0500
commit3612b49598c303cfb22a4b609427f829828e2427 (patch)
treed0e9eabb176777ab80af5d78eab0555044172370 /fs/afs/cmservice.c
parent34d19bada00f4825588b338a8ee193820f9ceeb0 (diff)
btrfs: fix return value check of btrfs_join_transaction()
The error check of btrfs_join_transaction()/btrfs_join_transaction_nolock() is added, and the mistake of the error check in several places is corrected. For more stable Btrfs, I think that we should reduce BUG_ON(). But, I think that long time is necessary for this. So, I propose this patch as a short-term solution. With this patch: - To more stable Btrfs, the part that should be corrected is clarified. - The panic isn't done by the NULL pointer reference etc. (even if BUG_ON() is increased temporarily) - The error code is returned in the place where the error can be easily returned. As a long-term plan: - BUG_ON() is reduced by using the forced-readonly framework, etc. Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
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