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authorBenjamin Marzinski <bmarzins@redhat.com>2009-07-23 18:52:34 -0500
committerSteven Whitehouse <swhiteho@redhat.com>2009-07-30 11:01:03 +0100
commitb94a170e96dc416828af9d350ae2e34b70ae7347 (patch)
tree6000929d554359c7b520a49a63415b9fc18b48b9 /fs/gfs2/glock.h
parent6b94617024bd6810cde1d0d491202c30d5a38d91 (diff)
downloadop-kernel-dev-b94a170e96dc416828af9d350ae2e34b70ae7347.zip
op-kernel-dev-b94a170e96dc416828af9d350ae2e34b70ae7347.tar.gz
GFS2: remove dcache entries for remote deleted inodes
When a file is deleted from a gfs2 filesystem on one node, a dcache entry for it may still exist on other nodes in the cluster. If this happens, gfs2 will be unable to free this file on disk. Because of this, it's possible to have a gfs2 filesystem with no files on it and no free space. With this patch, when a node receives a callback notifying it that the file is being deleted on another node, it schedules a new workqueue thread to remove the file's dcache entry. Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/glock.h')
-rw-r--r--fs/gfs2/glock.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h
index a602a28..c609894 100644
--- a/fs/gfs2/glock.h
+++ b/fs/gfs2/glock.h
@@ -143,6 +143,7 @@ struct lm_lockops {
#define GLR_TRYFAILED 13
+extern struct workqueue_struct *gfs2_delete_workqueue;
static inline struct gfs2_holder *gfs2_glock_is_locked_by_me(struct gfs2_glock *gl)
{
struct gfs2_holder *gh;
@@ -191,6 +192,8 @@ static inline int gfs2_glock_is_blocking(struct gfs2_glock *gl)
int gfs2_glock_get(struct gfs2_sbd *sdp,
u64 number, const struct gfs2_glock_operations *glops,
int create, struct gfs2_glock **glp);
+void gfs2_glock_hold(struct gfs2_glock *gl);
+void gfs2_glock_put_nolock(struct gfs2_glock *gl);
int gfs2_glock_put(struct gfs2_glock *gl);
void gfs2_holder_init(struct gfs2_glock *gl, unsigned int state, unsigned flags,
struct gfs2_holder *gh);
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