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authorChao Yu <chao@kernel.org>2025-12-15 20:28:03 +0800
committerJaegeuk Kim <jaegeuk@kernel.org>2026-01-17 00:00:34 +0000
commit1dd3b437d49ce09f0bd72acc1d694e212f26d1fe (patch)
tree790272e1b2d6344f93c7cadc26105332c6a7964c
parentce2739e482bce8d2c014d76c4531c877f382aa54 (diff)
f2fs: make FAULT_DISCARD obsolete
__blkdev_issue_discard() in __submit_discard_cmd() will never fail, so let's make FAULT_DISCARD fault injection obsolete. Signed-off-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
-rw-r--r--Documentation/ABI/testing/sysfs-fs-f2fs2
-rw-r--r--Documentation/filesystems/f2fs.rst2
-rw-r--r--fs/f2fs/f2fs.h2
-rw-r--r--fs/f2fs/segment.c18
4 files changed, 6 insertions, 18 deletions
diff --git a/Documentation/ABI/testing/sysfs-fs-f2fs b/Documentation/ABI/testing/sysfs-fs-f2fs
index ca9ed3b44b31..7398b369784c 100644
--- a/Documentation/ABI/testing/sysfs-fs-f2fs
+++ b/Documentation/ABI/testing/sysfs-fs-f2fs
@@ -732,7 +732,7 @@ Description: Support configuring fault injection type, should be
FAULT_TRUNCATE 0x00000400
FAULT_READ_IO 0x00000800
FAULT_CHECKPOINT 0x00001000
- FAULT_DISCARD 0x00002000
+ FAULT_DISCARD 0x00002000 (obsolete)
FAULT_WRITE_IO 0x00004000
FAULT_SLAB_ALLOC 0x00008000
FAULT_DQUOT_INIT 0x00010000
diff --git a/Documentation/filesystems/f2fs.rst b/Documentation/filesystems/f2fs.rst
index 33d2166ac6b7..fc005f2eaf86 100644
--- a/Documentation/filesystems/f2fs.rst
+++ b/Documentation/filesystems/f2fs.rst
@@ -206,7 +206,7 @@ fault_type=%d Support configuring fault injection type, should be
FAULT_TRUNCATE 0x00000400
FAULT_READ_IO 0x00000800
FAULT_CHECKPOINT 0x00001000
- FAULT_DISCARD 0x00002000
+ FAULT_DISCARD 0x00002000 (obsolete)
FAULT_WRITE_IO 0x00004000
FAULT_SLAB_ALLOC 0x00008000
FAULT_DQUOT_INIT 0x00010000
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h
index 90aa1d53722a..579aafb0055f 100644
--- a/fs/f2fs/f2fs.h
+++ b/fs/f2fs/f2fs.h
@@ -54,7 +54,7 @@ enum {
FAULT_TRUNCATE,
FAULT_READ_IO,
FAULT_CHECKPOINT,
- FAULT_DISCARD,
+ FAULT_DISCARD, /* it's obsolete due to __blkdev_issue_discard() will never fail */
FAULT_WRITE_IO,
FAULT_SLAB_ALLOC,
FAULT_DQUOT_INIT,
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 587ae3b4bfd8..74fca1d4b8ed 100644
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -1287,7 +1287,6 @@ static int __submit_discard_cmd(struct f2fs_sb_info *sbi,
&(dcc->fstrim_list) : &(dcc->wait_list);
blk_opf_t flag = dpolicy->sync ? REQ_SYNC : 0;
block_t lstart, start, len, total_len;
- int err = 0;
if (dc->state != D_PREP)
return 0;
@@ -1328,7 +1327,7 @@ static int __submit_discard_cmd(struct f2fs_sb_info *sbi,
dc->di.len = 0;
- while (total_len && *issued < dpolicy->max_requests && !err) {
+ while (total_len && *issued < dpolicy->max_requests) {
struct bio *bio = NULL;
unsigned long flags;
bool last = true;
@@ -1344,17 +1343,6 @@ static int __submit_discard_cmd(struct f2fs_sb_info *sbi,
dc->di.len += len;
- err = 0;
- if (time_to_inject(sbi, FAULT_DISCARD)) {
- err = -EIO;
- spin_lock_irqsave(&dc->lock, flags);
- if (dc->state == D_PARTIAL)
- dc->state = D_SUBMIT;
- spin_unlock_irqrestore(&dc->lock, flags);
-
- break;
- }
-
__blkdev_issue_discard(bdev, SECTOR_FROM_BLOCK(start),
SECTOR_FROM_BLOCK(len), GFP_NOFS, &bio);
f2fs_bug_on(sbi, !bio);
@@ -1393,11 +1381,11 @@ static int __submit_discard_cmd(struct f2fs_sb_info *sbi,
len = total_len;
}
- if (!err && len) {
+ if (len) {
dcc->undiscard_blks -= len;
__update_discard_tree_range(sbi, bdev, lstart, start, len);
}
- return err;
+ return 0;
}
static void __insert_discard_cmd(struct f2fs_sb_info *sbi,