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GFS2: Fix type mapping for demote_rq interface 

Mostly the glock operations follow the type of the glock. The
one exception is the transaction glock, so we need to check for
that directly.

Reported-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Steven Whitehouse 2010-10-06 09:58:44 +01:00
parent 46290341cd
commit 134669854e
2 changed files with 4 additions and 2 deletions
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1
fs/gfs2/glops.c
View File

@ -452,7 +452,6 @@ const struct gfs2_glock_operations *gfs2_glops_list[] = {
[LM_TYPE_META] = &gfs2_meta_glops,
[LM_TYPE_INODE] = &gfs2_inode_glops,
[LM_TYPE_RGRP] = &gfs2_rgrp_glops,
[LM_TYPE_NONDISK] = &gfs2_trans_glops,
[LM_TYPE_IOPEN] = &gfs2_iopen_glops,
[LM_TYPE_FLOCK] = &gfs2_flock_glops,
[LM_TYPE_NONDISK] = &gfs2_nondisk_glops,

5
fs/gfs2/sys.c
View File

@ -230,7 +230,10 @@ static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len
if (gltype > LM_TYPE_JOURNAL)
return -EINVAL;
glops = gfs2_glops_list[gltype];
if (gltype == LM_TYPE_NONDISK && glnum == GFS2_TRANS_LOCK)
glops = &gfs2_trans_glops;
else
glops = gfs2_glops_list[gltype];
if (glops == NULL)
return -EINVAL;
if (!test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags))