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gfs2: Prevent double iput for journal on error

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When a gfs2 file system is withdrawn it does iput on its journal to
allow recovery from another cluster node. If it's unable to get a
replacement inode for whatever reason, the journal descriptor would
still be pointing at the evicted inode. So when unmount clears out the
list of journals, it would do a second iput referencing the pointer.
To avoid this, set the inode pointer to NULL.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
This commit is contained in:
Bob Peterson 2022-08-18 13:32:36 -05:00 committed by Andreas Gruenbacher
parent c412a97cf6
commit 04133b607a
1 changed files with 1 additions and 0 deletions
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fs/gfs2/util.c
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@ -204,6 +204,7 @@ static void signal_our_withdraw(struct gfs2_sbd *sdp)
* exception code in glock_dq.
*/
iput(inode);
sdp->sd_jdesc->jd_inode = NULL;
/*
* Wait until the journal inode's glock is freed. This allows try locks
* on other nodes to be successful, otherwise we remain the owner of