Signed-off-by: David Woodhouse <David.Woodhouse@xxxxxxxxx>
---
fs/fat/fatent.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/fs/fat/fatent.c b/fs/fat/fatent.c
index 302e95c..5970fd6 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 *);
@@ -540,6 +541,11 @@ int fat_free_clusters(struct inode *inode, int cluster)
fatent_init(&fatent);
lock_fat(sbi);
do {
+ /* Issue discard for the sectors we no longer care about */
+ blkdev_issue_discard(sb->s_bdev,
+ fat_clus_to_blknr(sbi, cluster),
+ sbi->sec_per_clus, NULL);
+
cluster = fat_ent_read(inode, &fatent, cluster);
if (cluster < 0) {
err = cluster;
--
1.5.5.1
--
David Woodhouse Open Source Technology Centre
David.Woodhouse@xxxxxxxxx Intel Corporation
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