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| author | Qilong Zhang <zhangqilong3@huawei.com> | 2020-06-28 14:23:03 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2020-07-08 07:51:44 +0300 |
| commit | 97767500781fae9c53b7d227f99f1dbb0dfe9a4f (patch) | |
| tree | 7a54ad231d4924dacf5058b69d3ca7342fb874ef /fs/f2fs/gc.c | |
| parent | f608c38c59c6020bfde14af88630b8d7817003f9 (diff) | |
| download | linux-97767500781fae9c53b7d227f99f1dbb0dfe9a4f.tar.xz | |
f2fs: add f2fs_gc exception handle in f2fs_ioc_gc_range
When f2fs_ioc_gc_range performs multiple segments gc ops, the return
value of f2fs_ioc_gc_range is determined by the last segment gc ops.
If its ops failed, the f2fs_ioc_gc_range will be considered to be failed
despite some of previous segments gc ops succeeded. Therefore, so we
fix: Redefine the return value of getting victim ops and add exception
handle for f2fs_gc. In particular, 1).if target has no valid block, it
will go on. 2).if target sectoion has valid block(s), but it is current
section, we will reminder the caller.
Signed-off-by: Qilong Zhang <zhangqilong3@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/gc.c')
| -rw-r--r-- | fs/f2fs/gc.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 5e1368ce2389..6eec3b2d606d 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -330,6 +330,7 @@ static int get_victim_by_default(struct f2fs_sb_info *sbi, unsigned int secno, last_victim; unsigned int last_segment; unsigned int nsearched = 0; + int ret = 0; mutex_lock(&dirty_i->seglist_lock); last_segment = MAIN_SECS(sbi) * sbi->segs_per_sec; @@ -341,12 +342,19 @@ static int get_victim_by_default(struct f2fs_sb_info *sbi, p.min_cost = get_max_cost(sbi, &p); if (*result != NULL_SEGNO) { - if (get_valid_blocks(sbi, *result, false) && - !sec_usage_check(sbi, GET_SEC_FROM_SEG(sbi, *result))) + if (!get_valid_blocks(sbi, *result, false)) { + ret = -ENODATA; + goto out; + } + + if (sec_usage_check(sbi, GET_SEC_FROM_SEG(sbi, *result))) + ret = -EBUSY; + else p.min_segno = *result; goto out; } + ret = -ENODATA; if (p.max_search == 0) goto out; @@ -447,6 +455,7 @@ got_result: else set_bit(secno, dirty_i->victim_secmap); } + ret = 0; } out: @@ -456,7 +465,7 @@ out: prefree_segments(sbi), free_segments(sbi)); mutex_unlock(&dirty_i->seglist_lock); - return (p.min_segno == NULL_SEGNO) ? 0 : 1; + return ret; } static const struct victim_selection default_v_ops = { @@ -1340,10 +1349,9 @@ gc_more: ret = -EINVAL; goto stop; } - if (!__get_victim(sbi, &segno, gc_type)) { - ret = -ENODATA; + ret = __get_victim(sbi, &segno, gc_type); + if (ret) goto stop; - } seg_freed = do_garbage_collect(sbi, segno, &gc_list, gc_type); if (gc_type == FG_GC && seg_freed == sbi->segs_per_sec) |