diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/gfs2/glock.c | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c index 1c4cddf42a66..3ad8cb3eeb88 100644 --- a/fs/gfs2/glock.c +++ b/fs/gfs2/glock.c @@ -46,10 +46,12 @@ #include "trace_gfs2.h" struct gfs2_glock_iter { - int hash; /* hash bucket index */ - struct gfs2_sbd *sdp; /* incore superblock */ - struct gfs2_glock *gl; /* current glock struct */ - char string[512]; /* scratch space */ + int hash; /* hash bucket index */ + unsigned nhash; /* Index within current bucket */ + struct gfs2_sbd *sdp; /* incore superblock */ + struct gfs2_glock *gl; /* current glock struct */ + loff_t last_pos; /* last position */ + char string[512]; /* scratch space */ }; typedef void (*glock_examiner) (struct gfs2_glock * gl); @@ -950,7 +952,7 @@ void gfs2_print_dbg(struct seq_file *seq, const char *fmt, ...) if (seq) { struct gfs2_glock_iter *gi = seq->private; vsprintf(gi->string, fmt, args); - seq_printf(seq, gi->string); + seq_puts(seq, gi->string); } else { vaf.fmt = fmt; vaf.va = &args; @@ -1854,8 +1856,14 @@ static int gfs2_glock_iter_next(struct gfs2_glock_iter *gi) gl = gi->gl; if (gl) { gi->gl = glock_hash_next(gl); + gi->nhash++; } else { + if (gi->hash >= GFS2_GL_HASH_SIZE) { + rcu_read_unlock(); + return 1; + } gi->gl = glock_hash_chain(gi->hash); + gi->nhash = 0; } while (gi->gl == NULL) { gi->hash++; @@ -1864,6 +1872,7 @@ static int gfs2_glock_iter_next(struct gfs2_glock_iter *gi) return 1; } gi->gl = glock_hash_chain(gi->hash); + gi->nhash = 0; } /* Skip entries for other sb and dead entries */ } while (gi->sdp != gi->gl->gl_sbd || atomic_read(&gi->gl->gl_ref) == 0); @@ -1876,7 +1885,12 @@ static void *gfs2_glock_seq_start(struct seq_file *seq, loff_t *pos) struct gfs2_glock_iter *gi = seq->private; loff_t n = *pos; - gi->hash = 0; + if (gi->last_pos <= *pos) + n = gi->nhash + (*pos - gi->last_pos); + else + gi->hash = 0; + + gi->nhash = 0; rcu_read_lock(); do { @@ -1884,6 +1898,7 @@ static void *gfs2_glock_seq_start(struct seq_file *seq, loff_t *pos) return NULL; } while (n--); + gi->last_pos = *pos; return gi->gl; } @@ -1893,7 +1908,7 @@ static void *gfs2_glock_seq_next(struct seq_file *seq, void *iter_ptr, struct gfs2_glock_iter *gi = seq->private; (*pos)++; - + gi->last_pos = *pos; if (gfs2_glock_iter_next(gi)) return NULL; |