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[LogFS] Prevent mempool_destroy NULL pointer dereference

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It would probably be better to just accept NULL pointers in
mempool_destroy().  But for the current -rc series let's keep things
simple.

This patch was lost in the cracks for a while.
Kevin Cernekee <cernekee@gmail.com> had to rediscover the problem and
send a similar patch because of it. :(

Signed-off-by: Joern Engel <joern@logfs.org>
This commit is contained in:
Joern Engel
2010-04-15 08:03:57 +02:00
parent ead88af5f5
commit 1f1b0008e8
4 changed files with 11 additions and 7 deletions
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6
fs/logfs/readwrite.c
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@@ -2243,8 +2243,6 @@ void logfs_cleanup_rw(struct super_block *sb)
struct logfs_super *super = logfs_super(sb);
destroy_meta_inode(super->s_segfile_inode);
if (super->s_block_pool)
mempool_destroy(super->s_block_pool);
if (super->s_shadow_pool)
mempool_destroy(super->s_shadow_pool);
logfs_mempool_destroy(super->s_block_pool);
logfs_mempool_destroy(super->s_shadow_pool);
}