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Date: Mon, 16 Mar 2015 14:25:28 +0100
From: Beata Michalska <b.michalska@...sung.com>
To: lczerner@...hat.com, adilger.kernel@...ger.ca
Cc: tytso@....edu, linux-ext4@...r.kernel.org,
linux-kernel@...r.kernel.org, kyungmin.park@...sung.com
Subject: [PATCH v2 1/2] ext4: Add helper function to mark group as corrupted
Add ext4_mark_group_corrupted helper function to
simplify the code and to keep the logic in one place.
Signed-off-by: Beata Michalska <b.michalska@...sung.com>
---
fs/ext4/balloc.c | 17 ++++-------------
fs/ext4/ext4.h | 9 +++++++++
fs/ext4/ialloc.c | 5 +----
fs/ext4/mballoc.c | 13 +++----------
fs/ext4/super.c | 2 +-
5 files changed, 18 insertions(+), 28 deletions(-)
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 83a6f49..5e6a9ca 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -193,10 +193,7 @@ static int ext4_init_block_bitmap(struct super_block *sb,
* essentially implementing a per-group read-only flag. */
if (!ext4_group_desc_csum_verify(sb, block_group, gdp)) {
grp = ext4_get_group_info(sb, block_group);
- if (!EXT4_MB_GRP_BBITMAP_CORRUPT(grp))
- percpu_counter_sub(&sbi->s_freeclusters_counter,
- grp->bb_free);
- set_bit(EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT, &grp->bb_state);
+ ext4_mark_group_corrupted(sbi, grp);
if (!EXT4_MB_GRP_IBITMAP_CORRUPT(grp)) {
int count;
count = ext4_free_inodes_count(sb, gdp);
@@ -252,7 +249,7 @@ unsigned ext4_free_clusters_after_init(struct super_block *sb,
ext4_group_t block_group,
struct ext4_group_desc *gdp)
{
- return num_clusters_in_group(sb, block_group) -
+ return num_clusters_in_group(sb, block_group) -
ext4_num_overhead_clusters(sb, block_group, gdp);
}
@@ -379,20 +376,14 @@ static void ext4_validate_block_bitmap(struct super_block *sb,
ext4_unlock_group(sb, block_group);
ext4_error(sb, "bg %u: block %llu: invalid block bitmap",
block_group, blk);
- if (!EXT4_MB_GRP_BBITMAP_CORRUPT(grp))
- percpu_counter_sub(&sbi->s_freeclusters_counter,
- grp->bb_free);
- set_bit(EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT, &grp->bb_state);
+ ext4_mark_group_corrupted(sbi, grp);
return;
}
if (unlikely(!ext4_block_bitmap_csum_verify(sb, block_group,
desc, bh))) {
ext4_unlock_group(sb, block_group);
ext4_error(sb, "bg %u: bad block bitmap checksum", block_group);
- if (!EXT4_MB_GRP_BBITMAP_CORRUPT(grp))
- percpu_counter_sub(&sbi->s_freeclusters_counter,
- grp->bb_free);
- set_bit(EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT, &grp->bb_state);
+ ext4_mark_group_corrupted(sbi, grp);
return;
}
set_buffer_verified(bh);
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index f63c3d5..e10a94c 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2535,6 +2535,15 @@ static inline spinlock_t *ext4_group_lock_ptr(struct super_block *sb,
return bgl_lock_ptr(EXT4_SB(sb)->s_blockgroup_lock, group);
}
+static inline
+void ext4_mark_group_corrupted(struct ext4_sb_info *sbi,
+ struct ext4_group_info *grp)
+{
+ if (!EXT4_MB_GRP_BBITMAP_CORRUPT(grp))
+ percpu_counter_sub(&sbi->s_freeclusters_counter, grp->bb_free);
+ set_bit(EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT, &grp->bb_state);
+}
+
/*
* Returns true if the filesystem is busy enough that attempts to
* access the block group locks has run into contention.
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index ac644c3..ebe0499 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -79,10 +79,7 @@ static unsigned ext4_init_inode_bitmap(struct super_block *sb,
if (!ext4_group_desc_csum_verify(sb, block_group, gdp)) {
ext4_error(sb, "Checksum bad for group %u", block_group);
grp = ext4_get_group_info(sb, block_group);
- if (!EXT4_MB_GRP_BBITMAP_CORRUPT(grp))
- percpu_counter_sub(&sbi->s_freeclusters_counter,
- grp->bb_free);
- set_bit(EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT, &grp->bb_state);
+ ext4_mark_group_corrupted(sbi, grp);
if (!EXT4_MB_GRP_IBITMAP_CORRUPT(grp)) {
int count;
count = ext4_free_inodes_count(sb, gdp);
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 8d1e602..b8817f3 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -760,10 +760,7 @@ void ext4_mb_generate_buddy(struct super_block *sb,
* corrupt and update bb_free using bitmap value
*/
grp->bb_free = free;
- if (!EXT4_MB_GRP_BBITMAP_CORRUPT(grp))
- percpu_counter_sub(&sbi->s_freeclusters_counter,
- grp->bb_free);
- set_bit(EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT, &grp->bb_state);
+ ext4_mark_group_corrupted(sbi, grp);
}
mb_set_largest_free_order(sb, grp);
@@ -1448,12 +1445,8 @@ static void mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b,
"freeing already freed block "
"(bit %u); block bitmap corrupt.",
block);
- if (!EXT4_MB_GRP_BBITMAP_CORRUPT(e4b->bd_info))
- percpu_counter_sub(&sbi->s_freeclusters_counter,
- e4b->bd_info->bb_free);
/* Mark the block group as corrupt. */
- set_bit(EXT4_GROUP_INFO_BBITMAP_CORRUPT_BIT,
- &e4b->bd_info->bb_state);
+ ext4_mark_group_corrupted(sbi, e4b->bd_info);
mb_regenerate_buddy(e4b);
goto done;
}
@@ -2362,7 +2355,7 @@ int ext4_mb_alloc_groupinfo(struct super_block *sb, ext4_group_t ngroups)
}
sbi->s_group_info = new_groupinfo;
sbi->s_group_info_size = size / sizeof(*sbi->s_group_info);
- ext4_debug("allocated s_groupinfo array for %d meta_bg's\n",
+ ext4_debug("allocated s_groupinfo array for %d meta_bg's\n",
sbi->s_group_info_size);
return 0;
}
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index e061e66..b4dfba3 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -4153,7 +4153,7 @@ no_journal:
}
block = ext4_count_free_clusters(sb);
- ext4_free_blocks_count_set(sbi->s_es,
+ ext4_free_blocks_count_set(sbi->s_es,
EXT4_C2B(sbi, block));
err = percpu_counter_init(&sbi->s_freeclusters_counter, block,
GFP_KERNEL);
--
1.7.9.5
--
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