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authorLinus Torvalds <torvalds@linux-foundation.org>2008-10-10 10:52:45 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-10 10:52:45 -0700
commite26feff647ef34423b048b940540a0059001ddb0 (patch)
treeacafe68602ee2f6f1a438c113073ffcc0040e949 /fs/fat
parentd403a6484f0341bf0624d17ece46f24f741b6a92 (diff)
parentb911e473d24633c19414b54b82b9ff0b1a2419d7 (diff)
Merge branch 'for-2.6.28' of git://git.kernel.dk/linux-2.6-block
* 'for-2.6.28' of git://git.kernel.dk/linux-2.6-block: (132 commits) doc/cdrom: Trvial documentation error, file not present block_dev: fix kernel-doc in new functions block: add some comments around the bio read-write flags block: mark bio_split_pool static block: Find bio sector offset given idx and offset block: gendisk integrity wrapper block: Switch blk_integrity_compare from bdev to gendisk block: Fix double put in blk_integrity_unregister block: Introduce integrity data ownership flag block: revert part of d7533ad0e132f92e75c1b2eb7c26387b25a583c1 bio.h: Remove unused conditional code block: remove end_{queued|dequeued}_request() block: change elevator to use __blk_end_request() gdrom: change to use __blk_end_request() memstick: change to use __blk_end_request() virtio_blk: change to use __blk_end_request() blktrace: use BLKTRACE_BDEV_SIZE as the name size for setup structure block: add lld busy state exporting interface block: Fix blk_start_queueing() to not kick a stopped queue include blktrace_api.h in headers_install ...
Diffstat (limited to 'fs/fat')
-rw-r--r--fs/fat/fatent.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/fat/fatent.c b/fs/fat/fatent.c
index 302e95c4af7..fb98b3d847e 100644
--- a/fs/fat/fatent.c
+++ b/fs/fat/fatent.c
@@ -6,6 +6,7 @@
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/msdos_fs.h>
+#include <linux/blkdev.h>
struct fatent_operations {
void (*ent_blocknr)(struct super_block *, int, int *, sector_t *);
@@ -535,6 +536,7 @@ int fat_free_clusters(struct inode *inode, int cluster)
struct fat_entry fatent;
struct buffer_head *bhs[MAX_BUF_PER_PAGE];
int i, err, nr_bhs;
+ int first_cl = cluster;
nr_bhs = 0;
fatent_init(&fatent);
@@ -551,6 +553,18 @@ int fat_free_clusters(struct inode *inode, int cluster)
goto error;
}
+ /*
+ * Issue discard for the sectors we no longer care about,
+ * batching contiguous clusters into one request
+ */
+ if (cluster != fatent.entry + 1) {
+ int nr_clus = fatent.entry - first_cl + 1;
+
+ sb_issue_discard(sb, fat_clus_to_blknr(sbi, first_cl),
+ nr_clus * sbi->sec_per_clus);
+ first_cl = cluster;
+ }
+
ops->ent_put(&fatent, FAT_ENT_FREE);
if (sbi->free_clusters != -1) {
sbi->free_clusters++;