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authorArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2008-08-22 11:23:22 -0400
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2008-08-31 10:21:40 -0400
commit9bbb5726efb64e2cfed42f6eec07db80cd87e63b (patch)
treee7c0a28fff531ef34bb35448479e6bbcaeffe1f9
parent131130b9a1e6e523c64b34137b14f88ae1382a6a (diff)
UBIFS: introduce LEB overhead
This is a preparational patch for the following statfs() report fix. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
-rw-r--r--fs/ubifs/super.c6
-rw-r--r--fs/ubifs/ubifs.h5
2 files changed, 11 insertions, 0 deletions
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 1018053519e6..be23fd3cfd84 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -530,6 +530,12 @@ static int init_constants_early(struct ubifs_info *c)
530 c->dead_wm = ALIGN(MIN_WRITE_SZ, c->min_io_size); 530 c->dead_wm = ALIGN(MIN_WRITE_SZ, c->min_io_size);
531 c->dark_wm = ALIGN(UBIFS_MAX_NODE_SZ, c->min_io_size); 531 c->dark_wm = ALIGN(UBIFS_MAX_NODE_SZ, c->min_io_size);
532 532
533 /*
534 * Calculate how many bytes would be wasted at the end of LEB if it was
535 * fully filled with data nodes of maximum size. This is used in
536 * calculations when reporting free space.
537 */
538 c->leb_overhead = c->leb_size % UBIFS_MAX_DATA_NODE_SZ;
533 return 0; 539 return 0;
534} 540}
535 541
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index 681d46e16286..57e58541de28 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -995,6 +995,9 @@ struct ubifs_mount_opts {
995 * @max_idx_node_sz: maximum indexing node aligned on 8-bytes boundary 995 * @max_idx_node_sz: maximum indexing node aligned on 8-bytes boundary
996 * @max_inode_sz: maximum possible inode size in bytes 996 * @max_inode_sz: maximum possible inode size in bytes
997 * @max_znode_sz: size of znode in bytes 997 * @max_znode_sz: size of znode in bytes
998 *
999 * @leb_overhead: how many bytes are wasted in an LEB when it is filled with
1000 * data nodes of maximum size - used in free space reporting
998 * @dead_wm: LEB dead space watermark 1001 * @dead_wm: LEB dead space watermark
999 * @dark_wm: LEB dark space watermark 1002 * @dark_wm: LEB dark space watermark
1000 * @block_cnt: count of 4KiB blocks on the FS 1003 * @block_cnt: count of 4KiB blocks on the FS
@@ -1226,6 +1229,8 @@ struct ubifs_info {
1226 int max_idx_node_sz; 1229 int max_idx_node_sz;
1227 long long max_inode_sz; 1230 long long max_inode_sz;
1228 int max_znode_sz; 1231 int max_znode_sz;
1232
1233 int leb_overhead;
1229 int dead_wm; 1234 int dead_wm;
1230 int dark_wm; 1235 int dark_wm;
1231 int block_cnt; 1236 int block_cnt;