From a6a4d98b0124b5d3befe8b3a99f51f1b4fcc6dcf Mon Sep 17 00:00:00 2001 From: Bob Peterson Date: Wed, 29 May 2013 11:51:52 -0400 Subject: [PATCH] GFS2: Don't cache iopen glocks This patch makes GFS2 immediately reclaim/delete all iopen glocks as soon as they're dequeued. This allows deleters to get an EXclusive lock on iopen so files are deleted properly instead of being set as unlinked. Signed-off-by: Bob Peterson Signed-off-by: Steven Whitehouse --- fs/gfs2/inode.c | 1 + fs/gfs2/super.c | 6 +++++- 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 8833a4f264e3..62b484e4a9e4 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -189,6 +189,7 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type, return inode; fail_refresh: + ip->i_iopen_gh.gh_flags |= GL_NOCACHE; ip->i_iopen_gh.gh_gl->gl_object = NULL; gfs2_glock_dq_uninit(&ip->i_iopen_gh); fail_iopen: diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 917c8e1eb4ae..e5639dec66c4 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -1444,6 +1444,7 @@ static void gfs2_evict_inode(struct inode *inode) /* Must not read inode block until block type has been verified */ error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_SKIP, &gh); if (unlikely(error)) { + ip->i_iopen_gh.gh_flags |= GL_NOCACHE; gfs2_glock_dq_uninit(&ip->i_iopen_gh); goto out; } @@ -1514,8 +1515,10 @@ static void gfs2_evict_inode(struct inode *inode) if (gfs2_rs_active(ip->i_res)) gfs2_rs_deltree(ip->i_res); - if (test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) + if (test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) { + ip->i_iopen_gh.gh_flags |= GL_NOCACHE; gfs2_glock_dq(&ip->i_iopen_gh); + } gfs2_holder_uninit(&ip->i_iopen_gh); gfs2_glock_dq_uninit(&gh); if (error && error != GLR_TRYFAILED && error != -EROFS) @@ -1534,6 +1537,7 @@ static void gfs2_evict_inode(struct inode *inode) ip->i_gl = NULL; if (ip->i_iopen_gh.gh_gl) { ip->i_iopen_gh.gh_gl->gl_object = NULL; + ip->i_iopen_gh.gh_flags |= GL_NOCACHE; gfs2_glock_dq_uninit(&ip->i_iopen_gh); } }