diff options
| -rw-r--r-- | fs/gfs2/aops.c | 14 | ||||
| -rw-r--r-- | fs/gfs2/incore.h | 1 | ||||
| -rw-r--r-- | fs/gfs2/log.c | 4 |
3 files changed, 18 insertions, 1 deletions
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c index ed7a2e252ad8..68ed06962537 100644 --- a/fs/gfs2/aops.c +++ b/fs/gfs2/aops.c @@ -234,7 +234,19 @@ out: static int gfs2_writepages(struct address_space *mapping, struct writeback_control *wbc) { - return mpage_writepages(mapping, wbc, gfs2_get_block_noalloc); + struct gfs2_sbd *sdp = gfs2_mapping2sbd(mapping); + int ret = mpage_writepages(mapping, wbc, gfs2_get_block_noalloc); + + /* + * Even if we didn't write any pages here, we might still be holding + * dirty pages in the ail. We forcibly flush the ail because we don't + * want balance_dirty_pages() to loop indefinitely trying to write out + * pages held in the ail that it can't find. + */ + if (ret == 0) + set_bit(SDF_FORCE_AIL_FLUSH, &sdp->sd_flags); + + return ret; } /** diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index 73fce76e67ee..a7b0331c549d 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -606,6 +606,7 @@ enum { SDF_NOJOURNALID = 6, SDF_RORECOVERY = 7, /* read only recovery */ SDF_SKIP_DLM_UNLOCK = 8, + SDF_FORCE_AIL_FLUSH = 9, }; enum gfs2_freeze_state { diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index 9a624f694400..31585c2d22fe 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -898,6 +898,10 @@ static inline int gfs2_jrnl_flush_reqd(struct gfs2_sbd *sdp) static inline int gfs2_ail_flush_reqd(struct gfs2_sbd *sdp) { unsigned int used_blocks = sdp->sd_jdesc->jd_blocks - atomic_read(&sdp->sd_log_blks_free); + + if (test_and_clear_bit(SDF_FORCE_AIL_FLUSH, &sdp->sd_flags)) + return 1; + return used_blocks + atomic_read(&sdp->sd_log_blks_needed) >= atomic_read(&sdp->sd_log_thresh2); } |