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f2fs: assign return value in f2fs_gc

PATCH In review Jaegeuk Kim 2 participants 5 messages Sep 22, 2016

Subsystems (2)
VFS F2FS file system
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Jaegeuk Kim

author maintainer
#0 lore raw

PATCH 1/4 f2fs: assign return value in f2fs_gc

This patch adds a return value of write_checkpoint for f2fs_gc.

Signed-off-by Jaegeuk Kim <[email protected]>
---
 fs/f2fs/gc.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)
fs/f2fs/gc.c +7 -3
index 24acbbb..400bc6d 100644
@@ -925,10 +925,14 @@ gc_more:
 		 */
 		if (__get_victim(sbi, &segno, gc_type) ||
 						prefree_segments(sbi)) {
-			write_checkpoint(sbi, &cpc);
+			ret = write_checkpoint(sbi, &cpc);
+			if (ret)
+				goto stop;
 			segno = NULL_SEGNO;
 		} else if (has_not_enough_free_secs(sbi, 0, 0)) {
-			write_checkpoint(sbi, &cpc);
+			ret = write_checkpoint(sbi, &cpc);
+			if (ret)
+				goto stop;
 		}
 	}
 

@@ -948,7 +952,7 @@ gc_more:
 			goto gc_more;
 
 		if (gc_type == FG_GC)
-			write_checkpoint(sbi, &cpc);
+			ret = write_checkpoint(sbi, &cpc);
 	}
 stop:
 	mutex_unlock(&sbi->gc_mutex);
Signature · 1 line
2.8.3
author maintainer
#1 lore raw

PATCH 2/4 f2fs: should put_page for summary page

We should call put_page for preloaded summary pages in do_garbage_collect.

Signed-off-by Jaegeuk Kim <[email protected]>
---
 fs/f2fs/gc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
fs/f2fs/gc.c +2 -2
index 400bc6d..a9a3c9f 100644
@@ -848,7 +848,7 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi,
 	for (segno = start_segno; segno < end_segno; segno++) {
 
 		if (get_valid_blocks(sbi, segno, 1) == 0)
-			continue;
+			goto next;
 
 		/* find segment summary of victim */
 		sum_page = find_get_page(META_MAPPING(sbi),

@@ -874,7 +874,7 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi,
 								gc_type);
 
 		stat_inc_seg_count(sbi, type, gc_type);
-
+next:
 		f2fs_put_page(sum_page, 0);
 	}
Signature · 1 line
2.8.3
author maintainer
#2 lore raw

PATCH 3/4 f2fs: avoid gc in cp_error case

In reply to Jaegeuk Kim

Otherwise, we can hit

	f2fs_bug_on(sbi, !PageUptodate(sum_page));
Signed-off-by Jaegeuk Kim <[email protected]>
---
 fs/f2fs/gc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
fs/f2fs/gc.c +2 -1
index a9a3c9f..b9d6c42 100644
@@ -847,7 +847,8 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi,
 
 	for (segno = start_segno; segno < end_segno; segno++) {
 
-		if (get_valid_blocks(sbi, segno, 1) == 0)
+		if (get_valid_blocks(sbi, segno, 1) == 0 ||
+					unlikely(f2fs_cp_error(sbi)))
 			goto next;
 
 		/* find segment summary of victim */
Signature · 1 line
2.8.3
author maintainer
#3 lore raw

PATCH 4/4 f2fs: handle errors during recover_orphan_inodes

In reply to Jaegeuk Kim

This patch fixes to handle EIO during recover_orphan_inode() given the below panic.

F2FS-fs : inject IO error in f2fs_read_end_io+0xe6/0x100 [f2fs]

------------[ cut here ]------------
RIP: 0010:[<ffffffffc0b244e3>]  [<ffffffffc0b244e3>] f2fs_evict_inode+0x433/0x470 [f2fs]
RSP: 0018:ffff92f8b7fb7c30  EFLAGS: 00010246
RAX: ffff92fb88a13500 RBX: ffff92f890566ea0 RCX: 00000000fd3c255c
RDX: 0000000000000001 RSI: ffff92fb88a13d90 RDI: ffff92fb8ee127e8
RBP: ffff92f8b7fb7c58 R08: 0000000000000001 R09: ffff92fb88a13d58
R10: 000000005a6a9373 R11: 0000000000000001 R12: 00000000fffffffb
R13: ffff92fb8ee12000 R14: 00000000000034ca R15: ffff92fb8ee12620
FS:  00007f1fefd8e880(0000) GS:ffff92fb95600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc211d34cdb CR3: 000000012d43a000 CR4: 00000000001406e0
Stack:
 ffff92f890566ea0 ffff92f890567078 ffffffffc0b5a0c0 ffff92f890566f28
 ffff92fb888b2000 ffff92f8b7fb7c80 ffffffffbc27ff55 ffff92f890566ea0
 ffff92fb8bf10000 ffffffffc0b5a0c0 ffff92f8b7fb7cb0 ffffffffbc28090d
Call Trace:
 [<ffffffffbc27ff55>] evict+0xc5/0x1a0
 [<ffffffffbc28090d>] iput+0x1ad/0x2c0
 [<ffffffffc0b3304c>] recover_orphan_inodes+0x10c/0x2e0 [f2fs]
 [<ffffffffc0b2e0f4>] f2fs_fill_super+0x884/0x1150 [f2fs]
 [<ffffffffbc2644ac>] mount_bdev+0x18c/0x1c0
 [<ffffffffc0b2d870>] ? f2fs_commit_super+0x100/0x100 [f2fs]
 [<ffffffffc0b2a755>] f2fs_mount+0x15/0x20 [f2fs]
 [<ffffffffbc264e49>] mount_fs+0x39/0x170
 [<ffffffffbc28555b>] vfs_kern_mount+0x6b/0x160
 [<ffffffffbc2881df>] do_mount+0x1cf/0xd00
 [<ffffffffbc287f2c>] ? copy_mount_options+0xac/0x170
 [<ffffffffbc289003>] SyS_mount+0x83/0xd0
 [<ffffffffbc8ee880>] entry_SYSCALL_64_fastpath+0x23/0xc1
Signed-off-by Jaegeuk Kim <[email protected]>
---
 fs/f2fs/checkpoint.c | 27 +++++++++++++++++----------
 fs/f2fs/super.c      |  1 +
 2 files changed, 18 insertions(+), 10 deletions(-)
fs/f2fs/checkpoint.c +17 -10
index cd9fd7b..d1560bb 100644
@@ -535,6 +535,17 @@ static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
 {
 	struct inode *inode;
 	struct node_info ni;
+	int err = acquire_orphan_inode(sbi);
+
+	if (err) {
+		set_sbi_flag(sbi, SBI_NEED_FSCK);
+		f2fs_msg(sbi->sb, KERN_WARNING,
+				"%s: orphan failed (ino=%x), run fsck to fix.",
+				__func__, ino);
+		return err;
+	}
+
+	__add_ino_entry(sbi, ino, ORPHAN_INO);
 
 	inode = f2fs_iget_retry(sbi->sb, ino);
 	if (IS_ERR(inode)) {

@@ -555,17 +566,13 @@ static int recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino)
 
 	/* ENOMEM was fully retried in f2fs_evict_inode. */
 	if (ni.blk_addr != NULL_ADDR) {
-		int err = acquire_orphan_inode(sbi);
-
-		if (err) {
-			set_sbi_flag(sbi, SBI_NEED_FSCK);
-			f2fs_msg(sbi->sb, KERN_WARNING,
-				"%s: orphan failed (ino=%x), run fsck to fix.",
-					__func__, ino);
-			return err;
-		}
-		__add_ino_entry(sbi, ino, ORPHAN_INO);
+		set_sbi_flag(sbi, SBI_NEED_FSCK);
+		f2fs_msg(sbi->sb, KERN_WARNING,
+			"%s: orphan failed (ino=%x), run fsck to fix.",
+				__func__, ino);
+		return -EIO;
 	}
+	__remove_ino_entry(sbi, ino, ORPHAN_INO);
 	return 0;
 }
fs/f2fs/super.c +1 -0
index 95986a9..e7bb153 100644
@@ -1893,6 +1893,7 @@ free_root_inode:
 	sb->s_root = NULL;
 free_node_inode:
 	mutex_lock(&sbi->umount_mutex);
+	release_ino_entry(sbi, true);
 	f2fs_leave_shrinker(sbi);
 	iput(sbi->node_inode);
 	mutex_unlock(&sbi->umount_mutex);
Signature · 1 line
2.8.3