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| author | Bob Peterson <rpeterso@redhat.com> | 2019-05-09 09:21:48 -0500 |
|---|---|---|
| committer | Andreas Gruenbacher <agruenba@redhat.com> | 2019-06-27 21:27:43 +0200 |
| commit | 3792ce973f07a2644fd81424b9acacb12530a3cf (patch) | |
| tree | 63cdc83d302b01d8a8e492c95d985190248123bc /fs/gfs2/glock.h | |
| parent | 55317f5b00f0dc0c807979292362ddc568b5bcc9 (diff) | |
| download | linux-3792ce973f07a2644fd81424b9acacb12530a3cf.tar.gz linux-3792ce973f07a2644fd81424b9acacb12530a3cf.tar.bz2 linux-3792ce973f07a2644fd81424b9acacb12530a3cf.zip | |
gfs2: dump fsid when dumping glock problems
Before this patch, if a glock error was encountered, the glock with
the problem was dumped. But sometimes you may have lots of file systems
mounted, and that doesn't tell you which file system it was for.
This patch adds a new boolean parameter fsid to the dump_glock family
of functions. For non-error cases, such as dumping the glocks debugfs
file, the fsid is not dumped in order to keep lock dumps and glocktop
as clean as possible. For all error cases, such as GLOCK_BUG_ON, the
file system id is now printed. This will make it easier to debug.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'fs/gfs2/glock.h')
| -rw-r--r-- | fs/gfs2/glock.h | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h index 149d7f6af085..e4e0bed5257c 100644 --- a/fs/gfs2/glock.h +++ b/fs/gfs2/glock.h @@ -199,8 +199,11 @@ extern int gfs2_glock_nq_num(struct gfs2_sbd *sdp, u64 number, struct gfs2_holder *gh); extern int gfs2_glock_nq_m(unsigned int num_gh, struct gfs2_holder *ghs); extern void gfs2_glock_dq_m(unsigned int num_gh, struct gfs2_holder *ghs); -extern void gfs2_dump_glock(struct seq_file *seq, struct gfs2_glock *gl); -#define GLOCK_BUG_ON(gl,x) do { if (unlikely(x)) { gfs2_dump_glock(NULL, gl); BUG(); } } while(0) +extern void gfs2_dump_glock(struct seq_file *seq, struct gfs2_glock *gl, + bool fsid); +#define GLOCK_BUG_ON(gl,x) do { if (unlikely(x)) { \ + gfs2_dump_glock(NULL, gl, true); \ + BUG(); } } while(0) extern __printf(2, 3) void gfs2_print_dbg(struct seq_file *seq, const char *fmt, ...); @@ -266,7 +269,7 @@ static inline void glock_set_object(struct gfs2_glock *gl, void *object) { spin_lock(&gl->gl_lockref.lock); if (gfs2_assert_warn(gl->gl_name.ln_sbd, gl->gl_object == NULL)) - gfs2_dump_glock(NULL, gl); + gfs2_dump_glock(NULL, gl, true); gl->gl_object = object; spin_unlock(&gl->gl_lockref.lock); } @@ -278,7 +281,7 @@ static inline void glock_set_object(struct gfs2_glock *gl, void *object) * * I'd love to similarly add this: * else if (gfs2_assert_warn(gl->gl_sbd, gl->gl_object == object)) - * gfs2_dump_glock(NULL, gl); + * gfs2_dump_glock(NULL, gl, true); * Unfortunately, that's not possible because as soon as gfs2_delete_inode * frees the block in the rgrp, another process can reassign it for an I_NEW * inode in gfs2_create_inode because that calls new_inode, not gfs2_iget. |