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authorChao Yu <yuchao0@huawei.com>2017-10-28 10:52:32 +0200
committerJaegeuk Kim <jaegeuk@kernel.org>2017-11-06 01:41:56 +0100
commit0ea805129d1bc5dacb588392d191f686c91a70bb (patch)
tree152f3e4f4422194e16f98428a87dbd732be87938 /fs/f2fs/segment.c
parentf2fs: support bio allocation error injection (diff)
downloadlinux-0ea805129d1bc5dacb588392d191f686c91a70bb.tar.xz
linux-0ea805129d1bc5dacb588392d191f686c91a70bb.zip
f2fs: give correct trimmed blocks in fstrim
We have supported to issue discard in specified range during fstrim, it needs to return caller with successfully trimmed bytes in that range instead of bytes of invalid blocks which are scanned in checkpoint. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to '')
-rw-r--r--fs/f2fs/segment.c27
1 files changed, 19 insertions, 8 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 5c3293afeb8e..d2b2351e7d9c 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1256,21 +1256,27 @@ static bool __drop_discard_cmd(struct f2fs_sb_info *sbi)
return dropped;
}
-static void __wait_one_discard_bio(struct f2fs_sb_info *sbi,
+static unsigned int __wait_one_discard_bio(struct f2fs_sb_info *sbi,
struct discard_cmd *dc)
{
struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
+ unsigned int len = 0;
wait_for_completion_io(&dc->wait);
mutex_lock(&dcc->cmd_lock);
f2fs_bug_on(sbi, dc->state != D_DONE);
dc->ref--;
- if (!dc->ref)
+ if (!dc->ref) {
+ if (!dc->error)
+ len = dc->len;
__remove_discard_cmd(sbi, dc);
+ }
mutex_unlock(&dcc->cmd_lock);
+
+ return len;
}
-static void __wait_discard_cmd_range(struct f2fs_sb_info *sbi,
+static unsigned int __wait_discard_cmd_range(struct f2fs_sb_info *sbi,
struct discard_policy *dpolicy,
block_t start, block_t end)
{
@@ -1279,6 +1285,7 @@ static void __wait_discard_cmd_range(struct f2fs_sb_info *sbi,
&(dcc->fstrim_list) : &(dcc->wait_list);
struct discard_cmd *dc, *tmp;
bool need_wait;
+ unsigned int trimmed = 0;
next:
need_wait = false;
@@ -1291,6 +1298,8 @@ next:
continue;
if (dc->state == D_DONE && !dc->ref) {
wait_for_completion_io(&dc->wait);
+ if (!dc->error)
+ trimmed += dc->len;
__remove_discard_cmd(sbi, dc);
} else {
dc->ref++;
@@ -1301,9 +1310,11 @@ next:
mutex_unlock(&dcc->cmd_lock);
if (need_wait) {
- __wait_one_discard_bio(sbi, dc);
+ trimmed += __wait_one_discard_bio(sbi, dc);
goto next;
}
+
+ return trimmed;
}
static void __wait_all_discard_cmd(struct f2fs_sb_info *sbi,
@@ -1664,7 +1675,6 @@ find_next:
f2fs_issue_discard(sbi, entry->start_blkaddr + cur_pos,
len);
- cpc->trimmed += len;
total_len += len;
} else {
next_pos = find_next_bit_le(entry->discard_map,
@@ -2367,12 +2377,12 @@ int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range)
block_t start_block, end_block;
struct cp_control cpc;
struct discard_policy dpolicy;
+ unsigned long long trimmed = 0;
int err = 0;
if (start >= MAX_BLKADDR(sbi) || range->len < sbi->blocksize)
return -EINVAL;
- cpc.trimmed = 0;
if (end <= MAIN_BLKADDR(sbi))
goto out;
@@ -2419,9 +2429,10 @@ int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range)
init_discard_policy(&dpolicy, DPOLICY_FSTRIM, cpc.trim_minlen);
__issue_discard_cmd_range(sbi, &dpolicy, start_block, end_block);
- __wait_discard_cmd_range(sbi, &dpolicy, start_block, end_block);
+ trimmed = __wait_discard_cmd_range(sbi, &dpolicy,
+ start_block, end_block);
out:
- range->len = F2FS_BLK_TO_BYTES(cpc.trimmed);
+ range->len = F2FS_BLK_TO_BYTES(trimmed);
return err;
}