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authorBob Peterson <rpeterso@redhat.com>2011-11-14 10:45:40 -0500
committerSteven Whitehouse <swhiteho@redhat.com>2011-11-15 15:24:22 +0000
commitc688b8b334d20acbc79b0383af2816ecf7365741 (patch)
tree88d6db882149dcb05af56d8739af928360739bac /fs/gfs2
parent79c4c379c8f16a12c28ea2084db5138e33d17ebd (diff)
downloadlinux-next-c688b8b334d20acbc79b0383af2816ecf7365741.tar.gz
GFS2: Add non-try locks back to get_local_rgrp
This upstream patch had what I believe is an unintended consequence: http://git.kernel.org/?p=linux/kernel/git/steve/gfs2-3.0-nmw.git;a=commitdiff;h=beca42486749c1538a5ed58fe9dcc9f26d428c93 The patch changed function get_local_rgrp such that it ONLY used TRY locks for RGRP searches. Prior to that patch, the code used TRY locks during the first loop, and if that was unsuccessful, it used normal blocking locks on subsequent searches. This patch changes it back to the old way. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2')
-rw-r--r--fs/gfs2/rgrp.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 96bd6d759f29..a1a815b691cd 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -978,7 +978,7 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
struct gfs2_rgrpd *rgd, *begin = NULL;
struct gfs2_alloc *al = ip->i_alloc;
- int error, rg_locked;
+ int error, rg_locked, flags = LM_FLAG_TRY;
int loops = 0;
if (ip->i_rgd && rgrp_contains_block(ip->i_rgd, ip->i_goal))
@@ -997,7 +997,7 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
error = 0;
} else {
error = gfs2_glock_nq_init(rgd->rd_gl, LM_ST_EXCLUSIVE,
- LM_FLAG_TRY, &al->al_rgd_gh);
+ flags, &al->al_rgd_gh);
}
switch (error) {
case 0:
@@ -1012,8 +1012,10 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked)
/* fall through */
case GLR_TRYFAILED:
rgd = gfs2_rgrpd_get_next(rgd);
- if (rgd == begin)
+ if (rgd == begin) {
+ flags = 0;
loops++;
+ }
break;
default:
return error;