diff options
Diffstat (limited to 'fs/gfs2/log.c')
| -rw-r--r-- | fs/gfs2/log.c | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index 0fceb60907a2..0da05492e8b8 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -398,6 +398,15 @@ static void ail2_empty(struct gfs2_sbd *sdp, unsigned int new_tail) } /** + * gfs2_log_is_empty - Check if the log is empty + * @sdp: The GFS2 superblock + */ + +bool gfs2_log_is_empty(struct gfs2_sbd *sdp) { + return atomic_read(&sdp->sd_log_blks_free) == sdp->sd_jdesc->jd_blocks; +} + +/** * gfs2_log_release - Release a given number of log blocks * @sdp: The GFS2 superblock * @blks: The number of blocks @@ -461,13 +470,9 @@ retry: } while(free_blocks <= wanted); finish_wait(&sdp->sd_log_waitq, &wait); } - atomic_inc(&sdp->sd_reserving_log); if (atomic_cmpxchg(&sdp->sd_log_blks_free, free_blocks, - free_blocks - blks) != free_blocks) { - if (atomic_dec_and_test(&sdp->sd_reserving_log)) - wake_up(&sdp->sd_reserving_log_wait); + free_blocks - blks) != free_blocks) goto retry; - } atomic_sub(blks, &sdp->sd_log_blks_needed); trace_gfs2_log_blocks(sdp, -blks); @@ -483,8 +488,6 @@ retry: gfs2_log_release(sdp, blks); ret = -EROFS; } - if (atomic_dec_and_test(&sdp->sd_reserving_log)) - wake_up(&sdp->sd_reserving_log_wait); return ret; } |