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| author | Bob Peterson <rpeterso@redhat.com> | 2014-10-29 08:02:30 -0500 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2014-11-03 19:26:54 +0000 |
| commit | 1a8550332a7f0111306b6b34e44a7c696ef68c4d (patch) | |
| tree | 030b657ece5e651d86e27065107a79b416d89ec8 /fs/gfs2 | |
| parent | 33ad5d54284adf110f6e78aa9c4f42d3d17d7f68 (diff) | |
| download | linux-1a8550332a7f0111306b6b34e44a7c696ef68c4d.tar.gz linux-1a8550332a7f0111306b6b34e44a7c696ef68c4d.tar.bz2 linux-1a8550332a7f0111306b6b34e44a7c696ef68c4d.zip | |
GFS2: If we use up our block reservation, request more next time
If we run out of blocks for a given multi-block allocation, we obviously
did not reserve enough. We should reserve more blocks for the next
reservation to reduce fragmentation. This patch increases the size hint
for reservations when they run out.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2')
| -rw-r--r-- | fs/gfs2/rgrp.c | 3 | ||||
| -rw-r--r-- | fs/gfs2/rgrp.h | 1 |
2 files changed, 4 insertions, 0 deletions
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index f4e4a0c5babe..9150207f365c 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -2251,6 +2251,9 @@ static void gfs2_adjust_reservation(struct gfs2_inode *ip, trace_gfs2_rs(rs, TRACE_RS_CLAIM); if (rs->rs_free && !ret) goto out; + /* We used up our block reservation, so we should + reserve more blocks next time. */ + atomic_add(RGRP_RSRV_ADDBLKS, &rs->rs_sizehint); } __rs_deltree(rs); } diff --git a/fs/gfs2/rgrp.h b/fs/gfs2/rgrp.h index 5d8f085f7ade..b104f4af3afd 100644 --- a/fs/gfs2/rgrp.h +++ b/fs/gfs2/rgrp.h @@ -20,6 +20,7 @@ */ #define RGRP_RSRV_MINBYTES 8 #define RGRP_RSRV_MINBLKS ((u32)(RGRP_RSRV_MINBYTES * GFS2_NBBY)) +#define RGRP_RSRV_ADDBLKS 64 struct gfs2_rgrpd; struct gfs2_sbd; |