From d4da31986c5da14277b3ecc479f1b0682756b54c Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Wed, 22 Feb 2017 20:05:09 +0100 Subject: [PATCH] Revert "GFS2: Wait for iopen glock dequeues" Revert commit 86d067a797d4e8546a7c92b985f31e8cd3ec39ad: it turns out that waiting for iopen glock dequeues here isn't needed anymore because the bugs that commit was meant to fix have been fixed otherwise. In addition, we want to avoid waiting on glocks in gfs2_evict_inode in shrinker context because the shrinker may be invoked on behalf of DLM, in which case calling into DLM again would deadlock. This commit makes the described scenario less likely without completely avoiding it; it's still a step in the right direction, though. Signed-off-by: Andreas Gruenbacher Signed-off-by: Bob Peterson --- fs/gfs2/inode.c | 3 +-- fs/gfs2/super.c | 8 +++----- 2 files changed, 4 insertions(+), 7 deletions(-) diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index 4f405d43a86b..9f605ea4810c 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -202,8 +202,7 @@ struct inode *gfs2_inode_lookup(struct super_block *sb, unsigned int type, fail_refresh: ip->i_iopen_gh.gh_flags |= GL_NOCACHE; ip->i_iopen_gh.gh_gl->gl_object = NULL; - gfs2_glock_dq_wait(&ip->i_iopen_gh); - gfs2_holder_uninit(&ip->i_iopen_gh); + gfs2_glock_dq_uninit(&ip->i_iopen_gh); fail_put: if (io_gl) gfs2_glock_put(io_gl); diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 2a9a830fb3d6..29b0473f6e74 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -1539,8 +1539,7 @@ static void gfs2_evict_inode(struct inode *inode) 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_wait(&ip->i_iopen_gh); - gfs2_holder_uninit(&ip->i_iopen_gh); + gfs2_glock_dq_uninit(&ip->i_iopen_gh); goto out; } @@ -1618,7 +1617,7 @@ static void gfs2_evict_inode(struct inode *inode) if (gfs2_holder_initialized(&ip->i_iopen_gh)) { if (test_bit(HIF_HOLDER, &ip->i_iopen_gh.gh_iflags)) { ip->i_iopen_gh.gh_flags |= GL_NOCACHE; - gfs2_glock_dq_wait(&ip->i_iopen_gh); + gfs2_glock_dq(&ip->i_iopen_gh); } gfs2_holder_uninit(&ip->i_iopen_gh); } @@ -1640,8 +1639,7 @@ static void gfs2_evict_inode(struct inode *inode) if (gfs2_holder_initialized(&ip->i_iopen_gh)) { ip->i_iopen_gh.gh_gl->gl_object = NULL; ip->i_iopen_gh.gh_flags |= GL_NOCACHE; - gfs2_glock_dq_wait(&ip->i_iopen_gh); - gfs2_holder_uninit(&ip->i_iopen_gh); + gfs2_glock_dq_uninit(&ip->i_iopen_gh); } }