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GFS2: Don't try to end a non-existent transaction in unlink 

Before this patch, if function gfs2_unlink failed to get a valid
transaction (for example, not enough journal blocks) it would go
to label out_end_trans which did gfs2_trans_end. But if the
trans_begin failed, there's no transaction to end, and trying to
do so results in: kernel BUG at fs/gfs2/trans.c:117!

This patch changes the goto so that it does not try to end a
non-existent transaction.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
This commit is contained in:
Bob Peterson 2018-01-29 10:00:23 -07:00
parent 4519eaad72
commit 2eb5909dee
1 changed files with 2 additions and 3 deletions
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5
fs/gfs2/inode.c
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@ -1152,12 +1152,11 @@ static int gfs2_unlink(struct inode *dir, struct dentry *dentry)
error = gfs2_trans_begin(sdp, 2*RES_DINODE + 3*RES_LEAF + RES_RG_BIT, 0); error = gfs2_trans_begin(sdp, 2*RES_DINODE + 3*RES_LEAF + RES_RG_BIT, 0);
if (error) if (error)
goto out_end_trans; goto out_gunlock;
error = gfs2_unlink_inode(dip, dentry); error = gfs2_unlink_inode(dip, dentry);
out_end_trans:
gfs2_trans_end(sdp); gfs2_trans_end(sdp);
out_gunlock: out_gunlock:
gfs2_glock_dq(ghs + 2); gfs2_glock_dq(ghs + 2);
out_rgrp: out_rgrp: