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-rw-r--r--fs/ext4/acl.c3
-rw-r--r--fs/ext4/ext4.h17
-rw-r--r--fs/ext4/ialloc.c2
-rw-r--r--fs/ext4/inline.c5
-rw-r--r--fs/ext4/inode.c68
-rw-r--r--fs/ext4/ioctl.c2
-rw-r--r--fs/ext4/migrate.c48
-rw-r--r--fs/ext4/namei.c9
-rw-r--r--fs/ext4/page-io.c2
-rw-r--r--fs/ext4/readpage.c2
-rw-r--r--fs/ext4/resize.c105
-rw-r--r--fs/ext4/super.c109
-rw-r--r--fs/ext4/xattr.c110
13 files changed, 282 insertions, 200 deletions
diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c
index c1d570ee1d9f..8c7bbf3e566d 100644
--- a/fs/ext4/acl.c
+++ b/fs/ext4/acl.c
@@ -248,7 +248,8 @@ retry:
error = posix_acl_update_mode(inode, &mode, &acl);
if (error)
goto out_stop;
- update_mode = 1;
+ if (mode != inode->i_mode)
+ update_mode = 1;
}
error = __ext4_set_acl(handle, inode, type, acl, 0 /* xattr_flags */);
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 3f89d0ab08fc..185a05d3257e 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2454,8 +2454,19 @@ int do_journal_get_write_access(handle_t *handle,
#define FALL_BACK_TO_NONDELALLOC 1
#define CONVERT_INLINE_DATA 2
-extern struct inode *ext4_iget(struct super_block *, unsigned long);
-extern struct inode *ext4_iget_normal(struct super_block *, unsigned long);
+typedef enum {
+ EXT4_IGET_NORMAL = 0,
+ EXT4_IGET_SPECIAL = 0x0001, /* OK to iget a system inode */
+ EXT4_IGET_HANDLE = 0x0002 /* Inode # is from a handle */
+} ext4_iget_flags;
+
+extern struct inode *__ext4_iget(struct super_block *sb, unsigned long ino,
+ ext4_iget_flags flags, const char *function,
+ unsigned int line);
+
+#define ext4_iget(sb, ino, flags) \
+ __ext4_iget((sb), (ino), (flags), __func__, __LINE__)
+
extern int ext4_write_inode(struct inode *, struct writeback_control *);
extern int ext4_setattr(struct dentry *, struct iattr *);
extern int ext4_getattr(const struct path *, struct kstat *, u32, unsigned int);
@@ -2538,6 +2549,8 @@ extern int ext4_group_extend(struct super_block *sb,
extern int ext4_resize_fs(struct super_block *sb, ext4_fsblk_t n_blocks_count);
/* super.c */
+extern struct buffer_head *ext4_sb_bread(struct super_block *sb,
+ sector_t block, int op_flags);
extern int ext4_seq_options_show(struct seq_file *seq, void *offset);
extern int ext4_calculate_overhead(struct super_block *sb);
extern void ext4_superblock_csum_set(struct super_block *sb);
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 014f6a698cb7..7ff14a1adba3 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -1225,7 +1225,7 @@ struct inode *ext4_orphan_get(struct super_block *sb, unsigned long ino)
if (!ext4_test_bit(bit, bitmap_bh->b_data))
goto bad_orphan;
- inode = ext4_iget(sb, ino);
+ inode = ext4_iget(sb, ino, EXT4_IGET_NORMAL);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
ext4_error(sb, "couldn't read orphan inode %lu (err %d)",
diff --git a/fs/ext4/inline.c b/fs/ext4/inline.c
index 9c4bac18cc6c..27373d88b5f0 100644
--- a/fs/ext4/inline.c
+++ b/fs/ext4/inline.c
@@ -705,8 +705,11 @@ int ext4_try_to_write_inline_data(struct address_space *mapping,
if (!PageUptodate(page)) {
ret = ext4_read_inline_page(inode, page);
- if (ret < 0)
+ if (ret < 0) {
+ unlock_page(page);
+ put_page(page);
goto out_up_read;
+ }
}
ret = 1;
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 05f01fbd9c7f..9affabd07682 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4817,7 +4817,9 @@ static inline u64 ext4_inode_peek_iversion(const struct inode *inode)
return inode_peek_iversion(inode);
}
-struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
+struct inode *__ext4_iget(struct super_block *sb, unsigned long ino,
+ ext4_iget_flags flags, const char *function,
+ unsigned int line)
{
struct ext4_iloc iloc;
struct ext4_inode *raw_inode;
@@ -4831,6 +4833,18 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
gid_t i_gid;
projid_t i_projid;
+ if (((flags & EXT4_IGET_NORMAL) &&
+ (ino < EXT4_FIRST_INO(sb) && ino != EXT4_ROOT_INO)) ||
+ (ino < EXT4_ROOT_INO) ||
+ (ino > le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count))) {
+ if (flags & EXT4_IGET_HANDLE)
+ return ERR_PTR(-ESTALE);
+ __ext4_error(sb, function, line,
+ "inode #%lu: comm %s: iget: illegal inode #",
+ ino, current->comm);
+ return ERR_PTR(-EFSCORRUPTED);
+ }
+
inode = iget_locked(sb, ino);
if (!inode)
return ERR_PTR(-ENOMEM);
@@ -4846,18 +4860,26 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
raw_inode = ext4_raw_inode(&iloc);
if ((ino == EXT4_ROOT_INO) && (raw_inode->i_links_count == 0)) {
- EXT4_ERROR_INODE(inode, "root inode unallocated");
+ ext4_error_inode(inode, function, line, 0,
+ "iget: root inode unallocated");
ret = -EFSCORRUPTED;
goto bad_inode;
}
+ if ((flags & EXT4_IGET_HANDLE) &&
+ (raw_inode->i_links_count == 0) && (raw_inode->i_mode == 0)) {
+ ret = -ESTALE;
+ goto bad_inode;
+ }
+
if (EXT4_INODE_SIZE(inode->i_sb) > EXT4_GOOD_OLD_INODE_SIZE) {
ei->i_extra_isize = le16_to_cpu(raw_inode->i_extra_isize);
if (EXT4_GOOD_OLD_INODE_SIZE + ei->i_extra_isize >
EXT4_INODE_SIZE(inode->i_sb) ||
(ei->i_extra_isize & 3)) {
- EXT4_ERROR_INODE(inode,
- "bad extra_isize %u (inode size %u)",
+ ext4_error_inode(inode, function, line, 0,
+ "iget: bad extra_isize %u "
+ "(inode size %u)",
ei->i_extra_isize,
EXT4_INODE_SIZE(inode->i_sb));
ret = -EFSCORRUPTED;
@@ -4879,7 +4901,8 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
}
if (!ext4_inode_csum_verify(inode, raw_inode, ei)) {
- EXT4_ERROR_INODE(inode, "checksum invalid");
+ ext4_error_inode(inode, function, line, 0,
+ "iget: checksum invalid");
ret = -EFSBADCRC;
goto bad_inode;
}
@@ -4936,7 +4959,8 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
((__u64)le16_to_cpu(raw_inode->i_file_acl_high)) << 32;
inode->i_size = ext4_isize(sb, raw_inode);
if ((size = i_size_read(inode)) < 0) {
- EXT4_ERROR_INODE(inode, "bad i_size value: %lld", size);
+ ext4_error_inode(inode, function, line, 0,
+ "iget: bad i_size value: %lld", size);
ret = -EFSCORRUPTED;
goto bad_inode;
}
@@ -5012,7 +5036,8 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
ret = 0;
if (ei->i_file_acl &&
!ext4_data_block_valid(EXT4_SB(sb), ei->i_file_acl, 1)) {
- EXT4_ERROR_INODE(inode, "bad extended attribute block %llu",
+ ext4_error_inode(inode, function, line, 0,
+ "iget: bad extended attribute block %llu",
ei->i_file_acl);
ret = -EFSCORRUPTED;
goto bad_inode;
@@ -5040,8 +5065,9 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
} else if (S_ISLNK(inode->i_mode)) {
/* VFS does not allow setting these so must be corruption */
if (IS_APPEND(inode) || IS_IMMUTABLE(inode)) {
- EXT4_ERROR_INODE(inode,
- "immutable or append flags not allowed on symlinks");
+ ext4_error_inode(inode, function, line, 0,
+ "iget: immutable or append flags "
+ "not allowed on symlinks");
ret = -EFSCORRUPTED;
goto bad_inode;
}
@@ -5071,7 +5097,8 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
make_bad_inode(inode);
} else {
ret = -EFSCORRUPTED;
- EXT4_ERROR_INODE(inode, "bogus i_mode (%o)", inode->i_mode);
+ ext4_error_inode(inode, function, line, 0,
+ "iget: bogus i_mode (%o)", inode->i_mode);
goto bad_inode;
}
brelse(iloc.bh);
@@ -5085,13 +5112,6 @@ bad_inode:
return ERR_PTR(ret);
}
-struct inode *ext4_iget_normal(struct super_block *sb, unsigned long ino)
-{
- if (ino < EXT4_FIRST_INO(sb) && ino != EXT4_ROOT_INO)
- return ERR_PTR(-EFSCORRUPTED);
- return ext4_iget(sb, ino);
-}
-
static int ext4_inode_blocks_set(handle_t *handle,
struct ext4_inode *raw_inode,
struct ext4_inode_info *ei)
@@ -5380,9 +5400,13 @@ int ext4_write_inode(struct inode *inode, struct writeback_control *wbc)
{
int err;
- if (WARN_ON_ONCE(current->flags & PF_MEMALLOC))
+ if (WARN_ON_ONCE(current->flags & PF_MEMALLOC) ||
+ sb_rdonly(inode->i_sb))
return 0;
+ if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb))))
+ return -EIO;
+
if (EXT4_SB(inode->i_sb)->s_journal) {
if (ext4_journal_current_handle()) {
jbd_debug(1, "called recursively, non-PF_MEMALLOC!\n");
@@ -5398,7 +5422,8 @@ int ext4_write_inode(struct inode *inode, struct writeback_control *wbc)
if (wbc->sync_mode != WB_SYNC_ALL || wbc->for_sync)
return 0;
- err = ext4_force_commit(inode->i_sb);
+ err = jbd2_complete_transaction(EXT4_SB(inode->i_sb)->s_journal,
+ EXT4_I(inode)->i_sync_tid);
} else {
struct ext4_iloc iloc;
@@ -5835,9 +5860,10 @@ int ext4_mark_iloc_dirty(handle_t *handle,
{
int err = 0;
- if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb))))
+ if (unlikely(ext4_forced_shutdown(EXT4_SB(inode->i_sb)))) {
+ put_bh(iloc->bh);
return -EIO;
-
+ }
if (IS_I_VERSION(inode))
inode_inc_iversion(inode);
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index 0edee31913d1..d37dafa1d133 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -125,7 +125,7 @@ static long swap_inode_boot_loader(struct super_block *sb,
!inode_owner_or_capable(inode) || !capable(CAP_SYS_ADMIN))
return -EPERM;
- inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO);
+ inode_bl = ext4_iget(sb, EXT4_BOOT_LOADER_INO, EXT4_IGET_SPECIAL);
if (IS_ERR(inode_bl))
return PTR_ERR(inode_bl);
ei_bl = EXT4_I(inode_bl);
diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c
index 61a9d1927817..b1e4d359f73b 100644
--- a/fs/ext4/migrate.c
+++ b/fs/ext4/migrate.c
@@ -116,9 +116,9 @@ static int update_ind_extent_range(handle_t *handle, struct inode *inode,
int i, retval = 0;
unsigned long max_entries = inode->i_sb->s_blocksize >> 2;
- bh = sb_bread(inode->i_sb, pblock);
- if (!bh)
- return -EIO;
+ bh = ext4_sb_bread(inode->i_sb, pblock, 0);
+ if (IS_ERR(bh))
+ return PTR_ERR(bh);
i_data = (__le32 *)bh->b_data;
for (i = 0; i < max_entries; i++) {
@@ -145,9 +145,9 @@ static int update_dind_extent_range(handle_t *handle, struct inode *inode,
int i, retval = 0;
unsigned long max_entries = inode->i_sb->s_blocksize >> 2;
- bh = sb_bread(inode->i_sb, pblock);
- if (!bh)
- return -EIO;
+ bh = ext4_sb_bread(inode->i_sb, pblock, 0);
+ if (IS_ERR(bh))
+ return PTR_ERR(bh);
i_data = (__le32 *)bh->b_data;
for (i = 0; i < max_entries; i++) {
@@ -175,9 +175,9 @@ static int update_tind_extent_range(handle_t *handle, struct inode *inode,
int i, retval = 0;
unsigned long max_entries = inode->i_sb->s_blocksize >> 2;
- bh = sb_bread(inode->i_sb, pblock);
- if (!bh)
- return -EIO;
+ bh = ext4_sb_bread(inode->i_sb, pblock, 0);
+ if (IS_ERR(bh))
+ return PTR_ERR(bh);
i_data = (__le32 *)bh->b_data;
for (i = 0; i < max_entries; i++) {
@@ -224,9 +224,9 @@ static int free_dind_blocks(handle_t *handle,
struct buffer_head *bh;
unsigned long max_entries = inode->i_sb->s_blocksize >> 2;
- bh = sb_bread(inode->i_sb, le32_to_cpu(i_data));
- if (!bh)
- return -EIO;
+ bh = ext4_sb_bread(inode->i_sb, le32_to_cpu(i_data), 0);
+ if (IS_ERR(bh))
+ return PTR_ERR(bh);
tmp_idata = (__le32 *)bh->b_data;
for (i = 0; i < max_entries; i++) {
@@ -254,9 +254,9 @@ static int free_tind_blocks(handle_t *handle,
struct buffer_head *bh;
unsigned long max_entries = inode->i_sb->s_blocksize >> 2;
- bh = sb_bread(inode->i_sb, le32_to_cpu(i_data));
- if (!bh)
- return -EIO;
+ bh = ext4_sb_bread(inode->i_sb, le32_to_cpu(i_data), 0);
+ if (IS_ERR(bh))
+ return PTR_ERR(bh);
tmp_idata = (__le32 *)bh->b_data;
for (i = 0; i < max_entries; i++) {
@@ -382,9 +382,9 @@ static int free_ext_idx(handle_t *handle, struct inode *inode,
struct ext4_extent_header *eh;
block = ext4_idx_pblock(ix);
- bh = sb_bread(inode->i_sb, block);
- if (!bh)
- return -EIO;
+ bh = ext4_sb_bread(inode->i_sb, block, 0);
+ if (IS_ERR(bh))
+ return PTR_ERR(bh);
eh = (struct ext4_extent_header *)bh->b_data;
if (eh->eh_depth != 0) {
@@ -535,22 +535,22 @@ int ext4_ext_migrate(struct inode *inode)
if (i_data[EXT4_IND_BLOCK]) {
retval = update_ind_extent_range(handle, tmp_inode,
le32_to_cpu(i_data[EXT4_IND_BLOCK]), &lb);
- if (retval)
- goto err_out;
+ if (retval)
+ goto err_out;
} else
lb.curr_block += max_entries;
if (i_data[EXT4_DIND_BLOCK]) {
retval = update_dind_extent_range(handle, tmp_inode,
le32_to_cpu(i_data[EXT4_DIND_BLOCK]), &lb);
- if (retval)
- goto err_out;
+ if (retval)
+ goto err_out;
} else
lb.curr_block += max_entries * max_entries;
if (i_data[EXT4_TIND_BLOCK]) {
retval = update_tind_extent_range(handle, tmp_inode,
le32_to_cpu(i_data[EXT4_TIND_BLOCK]), &lb);
- if (retval)
- goto err_out;
+ if (retval)
+ goto err_out;
}
/*
* Build the last extent
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 17adcb16a9c8..2b928eb07fa2 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -126,6 +126,7 @@ static struct buffer_head *__ext4_read_dirblock(struct inode *inode,
if (!is_dx_block && type == INDEX) {
ext4_error_inode(inode, func, line, block,
"directory leaf block found instead of index block");
+ brelse(bh);
return ERR_PTR(-EFSCORRUPTED);
}
if (!ext4_has_metadata_csum(inode->i_sb) ||
@@ -1570,7 +1571,7 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsi
dentry);
return ERR_PTR(-EFSCORRUPTED);
}
- inode = ext4_iget_normal(dir->i_sb, ino);
+ inode = ext4_iget(dir->i_sb, ino, EXT4_IGET_NORMAL);
if (inode == ERR_PTR(-ESTALE)) {
EXT4_ERROR_INODE(dir,
"deleted inode referenced: %u",
@@ -1612,7 +1613,7 @@ struct dentry *ext4_get_parent(struct dentry *child)
return ERR_PTR(-EFSCORRUPTED);
}
- return d_obtain_alias(ext4_iget_normal(child->d_sb, ino));
+ return d_obtain_alias(ext4_iget(child->d_sb, ino, EXT4_IGET_NORMAL));
}
/*
@@ -2811,7 +2812,9 @@ int ext4_orphan_add(handle_t *handle, struct inode *inode)
list_del_init(&EXT4_I(inode)->i_orphan);
mutex_unlock(&sbi->s_orphan_lock);
}
- }
+ } else
+ brelse(iloc.bh);
+
jbd_debug(4, "superblock will point to %lu\n", inode->i_ino);
jbd_debug(4, "orphan inode %lu will point to %d\n",
inode->i_ino, NEXT_ORPHAN(inode));
diff --git a/fs/ext4/page-io.c b/fs/ext4/page-io.c
index db7590178dfc..2aa62d58d8dd 100644
--- a/fs/ext4/page-io.c
+++ b/fs/ext4/page-io.c
@@ -374,13 +374,13 @@ static int io_submit_init_bio(struct ext4_io_submit *io,
bio = bio_alloc(GFP_NOIO, BIO_MAX_PAGES);
if (!bio)
return -ENOMEM;
- wbc_init_bio(io->io_wbc, bio);
bio->bi_iter.bi_sector = bh->b_blocknr * (bh->b_size >> 9);
bio_set_dev(bio, bh->b_bdev);
bio->bi_end_io = ext4_end_bio;
bio->bi_private = ext4_get_io_end(io->io_end);
io->io_bio = bio;
io->io_next_block = bh->b_blocknr;
+ wbc_init_bio(io->io_wbc, bio);
return 0;
}
diff --git a/fs/ext4/readpage.c b/fs/ext4/readpage.c
index f461d75ac049..6aa282ee455a 100644
--- a/fs/ext4/readpage.c
+++ b/fs/ext4/readpage.c
@@ -128,7 +128,7 @@ int ext4_mpage_readpages(struct address_space *mapping,
prefetchw(&page->flags);
if (pages) {
- page = list_entry(pages->prev, struct page, lru);
+ page = lru_to_page(pages);
list_del(&page->lru);
if (add_to_page_cache_lru(page, mapping, page->index,
readahead_gfp_mask(mapping)))
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index ebbc663d0798..48421de803b7 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -127,10 +127,12 @@ static int verify_group_input(struct super_block *sb,
else if (free_blocks_count < 0)
ext4_warning(sb, "Bad blocks count %u",
input->blocks_count);
- else if (!(bh = sb_bread(sb, end - 1)))
+ else if (IS_ERR(bh = ext4_sb_bread(sb, end - 1, 0))) {
+ err = PTR_ERR(bh);
+ bh = NULL;
ext4_warning(sb, "Cannot read last block (%llu)",
end - 1);
- else if (outside(input->block_bitmap, start, end))
+ } else if (outside(input->block_bitmap, start, end))
ext4_warning(sb, "Block bitmap not in group (block %llu)",
(unsigned long long)input->block_bitmap);
else if (outside(input->inode_bitmap, start, end))
@@ -459,16 +461,18 @@ static int set_flexbg_block_bitmap(struct super_block *sb, handle_t *handle,
BUFFER_TRACE(bh, "get_write_access");
err = ext4_journal_get_write_access(handle, bh);
- if (err)
+ if (err) {
+ brelse(bh);
return err;
+ }
ext4_debug("mark block bitmap %#04llx (+%llu/%u)\n",
first_cluster, first_cluster - start, count2);
ext4_set_bits(bh->b_data, first_cluster - start, count2);
err = ext4_handle_dirty_metadata(handle, NULL, bh);
+ brelse(bh);
if (unlikely(err))
return err;
- brelse(bh);
}
return 0;
@@ -605,7 +609,6 @@ handle_bb:
bh = bclean(handle, sb, block);
if (IS_ERR(bh)) {
err = PTR_ERR(bh);
- bh = NULL;
goto out;
}
overhead = ext4_group_overhead_blocks(sb, group);
@@ -618,9 +621,9 @@ handle_bb:
ext4_mark_bitmap_end(EXT4_B2C(sbi, group_data[i].blocks_count),
sb->s_blocksize * 8, bh->b_data);
err = ext4_handle_dirty_metadata(handle, NULL, bh);
+ brelse(bh);
if (err)
goto out;
- brelse(bh);
handle_ib:
if (bg_flags[i] & EXT4_BG_INODE_UNINIT)
@@ -635,18 +638,16 @@ handle_ib:
bh = bclean(handle, sb, block);
if (IS_ERR(bh)) {
err = PTR_ERR(bh);
- bh = NULL;
goto out;
}
ext4_mark_bitmap_end(EXT4_INODES_PER_GROUP(sb),
sb->s_blocksize * 8, bh->b_data);
err = ext4_handle_dirty_metadata(handle, NULL, bh);
+ brelse(bh);
if (err)
goto out;
- brelse(bh);
}
- bh = NULL;
/* Mark group tables in block bitmap */
for (j = 0; j < GROUP_TABLE_COUNT; j++) {
@@ -685,7 +686,6 @@ handle_ib:
}
out:
- brelse(bh);
err2 = ext4_journal_stop(handle);
if (err2 && !err)
err = err2;
@@ -783,11 +783,11 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
struct ext4_super_block *es = EXT4_SB(sb)->s_es;
unsigned long gdb_num = group / EXT4_DESC_PER_BLOCK(sb);
ext4_fsblk_t gdblock = EXT4_SB(sb)->s_sbh->b_blocknr + 1 + gdb_num;
- struct buffer_head **o_group_desc, **n_group_desc;
- struct buffer_head *dind;
- struct buffer_head *gdb_bh;
+ struct buffer_head **o_group_desc, **n_group_desc = NULL;
+ struct buffer_head *dind = NULL;
+ struct buffer_head *gdb_bh = NULL;
int gdbackups;
- struct ext4_iloc iloc;
+ struct ext4_iloc iloc = { .bh = NULL };
__le32 *data;
int err;
@@ -796,21 +796,22 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
"EXT4-fs: ext4_add_new_gdb: adding group block %lu\n",
gdb_num);
- gdb_bh = sb_bread(sb, gdblock);
- if (!gdb_bh)
- return -EIO;
+ gdb_bh = ext4_sb_bread(sb, gdblock, 0);
+ if (IS_ERR(gdb_bh))
+ return PTR_ERR(gdb_bh);
gdbackups = verify_reserved_gdb(sb, group, gdb_bh);
if (gdbackups < 0) {
err = gdbackups;
- goto exit_bh;
+ goto errout;
}
data = EXT4_I(inode)->i_data + EXT4_DIND_BLOCK;
- dind = sb_bread(sb, le32_to_cpu(*data));
- if (!dind) {
- err = -EIO;
- goto exit_bh;
+ dind = ext4_sb_bread(sb, le32_to_cpu(*data), 0);
+ if (IS_ERR(dind)) {
+ err = PTR_ERR(dind);
+ dind = NULL;
+ goto errout;
}
data = (__le32 *)dind->b_data;
@@ -818,18 +819,18 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
ext4_warning(sb, "new group %u GDT block %llu not reserved",
group, gdblock);
err = -EINVAL;
- goto exit_dind;
+ goto errout;
}
BUFFER_TRACE(EXT4_SB(sb)->s_sbh, "get_write_access");
err = ext4_journal_get_write_access(handle, EXT4_SB(sb)->s_sbh);
if (unlikely(err))
- goto exit_dind;
+ goto errout;
BUFFER_TRACE(gdb_bh, "get_write_access");
err = ext4_journal_get_write_access(handle, gdb_bh);
if (unlikely(err))
- goto exit_dind;
+ goto errout;
BUFFER_TRACE(dind, "get_write_access");
err = ext4_journal_get_write_access(handle, dind);
@@ -839,7 +840,7 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
/* ext4_reserve_inode_write() gets a reference on the iloc */
err = ext4_reserve_inode_write(handle, inode, &iloc);
if (unlikely(err))
- goto exit_dind;
+ goto errout;
n_group_desc = ext4_kvmalloc((gdb_num + 1) *
sizeof(struct buffer_head *),
@@ -848,7 +849,7 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
err = -ENOMEM;
ext4_warning(sb, "not enough memory for %lu groups",
gdb_num + 1);
- goto exit_inode;
+ goto errout;
}
/*
@@ -864,7 +865,7 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
err = ext4_handle_dirty_metadata(handle, NULL, dind);
if (unlikely(err)) {
ext4_std_error(sb, err);
- goto exit_inode;
+ goto errout;
}
inode->i_blocks -= (gdbackups + 1) * sb->s_blocksize >>
(9 - EXT4_SB(sb)->s_cluster_bits);
@@ -873,7 +874,7 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
err = ext4_handle_dirty_metadata(handle, NULL, gdb_bh);
if (unlikely(err)) {
ext4_std_error(sb, err);
- goto exit_inode;
+ goto errout;
}
brelse(dind);
@@ -889,15 +890,11 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
err = ext4_handle_dirty_super(handle, sb);
if (err)
ext4_std_error(sb, err);
-
return err;
-
-exit_inode:
+errout:
kvfree(n_group_desc);
brelse(iloc.bh);
-exit_dind:
brelse(dind);
-exit_bh:
brelse(gdb_bh);
ext4_debug("leaving with error %d\n", err);
@@ -917,13 +914,14 @@ static int add_new_gdb_meta_bg(struct super_block *sb,
gdblock = ext4_meta_bg_first_block_no(sb, group) +
ext4_bg_has_super(sb, group);
- gdb_bh = sb_bread(sb, gdblock);
- if (!gdb_bh)
- return -EIO;
+ gdb_bh = ext4_sb_bread(sb, gdblock, 0);
+ if (IS_ERR(gdb_bh))
+ return PTR_ERR(gdb_bh);
n_group_desc = ext4_kvmalloc((gdb_num + 1) *
sizeof(struct buffer_head *),
GFP_NOFS);
if (!n_group_desc) {
+ brelse(gdb_bh);
err = -ENOMEM;
ext4_warning(sb, "not enough memory for %lu groups",
gdb_num + 1);
@@ -939,8 +937,6 @@ static int add_new_gdb_meta_bg(struct super_block *sb,
kvfree(o_group_desc);
BUFFER_TRACE(gdb_bh, "get_write_access");
err = ext4_journal_get_write_access(handle, gdb_bh);
- if (unlikely(err))
- brelse(gdb_bh);
return err;
}
@@ -977,9 +973,10 @@ static int reserve_backup_gdb(handle_t *handle, struct inode *inode,
return -ENOMEM;
data = EXT4_I(inode)->i_data + EXT4_DIND_BLOCK;
- dind = sb_bread(sb, le32_to_cpu(*data));
- if (!dind) {
- err = -EIO;
+ dind = ext4_sb_bread(sb, le32_to_cpu(*data), 0);
+ if (IS_ERR(dind)) {
+ err = PTR_ERR(dind);
+ dind = NULL;
goto exit_free;
}
@@ -998,9 +995,10 @@ static int reserve_backup_gdb(handle_t *handle, struct inode *inode,
err = -EINVAL;
goto exit_bh;
}
- primary[res] = sb_bread(sb, blk);
- if (!primary[res]) {
- err = -EIO;
+ primary[res] = ext4_sb_bread(sb, blk, 0);
+ if (IS_ERR(primary[res])) {
+ err = PTR_ERR(primary[res]);
+ primary[res] = NULL;
goto exit_bh;
}
gdbackups = verify_reserved_gdb(sb, group, primary[res]);
@@ -1124,8 +1122,10 @@ static void update_backups(struct super_block *sb, sector_t blk_off, char *data,
backup_block, backup_block -
ext4_group_first_block_no(sb, group));
BUFFER_TRACE(bh, "get_write_access");
- if ((err = ext4_journal_get_write_access(handle, bh)))
+ if ((err = ext4_journal_get_write_access(handle, bh))) {
+ brelse(bh);
break;
+ }
lock_buffer(bh);
memcpy(bh->b_data, data, size);
if (rest)
@@ -1631,13 +1631,13 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
}
if (reserved_gdb || gdb_off == 0) {
- if (ext4_has_feature_resize_inode(sb) ||
+ if (!ext4_has_feature_resize_inode(sb) ||
!le16_to_cpu(es->s_reserved_gdt_blocks)) {
ext4_warning(sb,
"No reserved GDT blocks, can't resize");
return -EPERM;
}
- inode = ext4_iget(sb, EXT4_RESIZE_INO);
+ inode = ext4_iget(sb, EXT4_RESIZE_INO, EXT4_IGET_SPECIAL);
if (IS_ERR(inode)) {
ext4_warning(sb, "Error opening resize inode");
return PTR_ERR(inode);
@@ -1965,7 +1965,8 @@ retry:
}
if (!resize_inode)
- resize_inode = ext4_iget(sb, EXT4_RESIZE_INO);
+ resize_inode = ext4_iget(sb, EXT4_RESIZE_INO,
+ EXT4_IGET_SPECIAL);
if (IS_ERR(resize_inode)) {
ext4_warning(sb, "Error opening resize inode");
return PTR_ERR(resize_inode);
@@ -2023,7 +2024,7 @@ retry:
err = ext4_alloc_flex_bg_array(sb, n_group + 1);
if (err)
- return err;
+ goto out;
err = ext4_mb_alloc_groupinfo(sb, n_group + 1);
if (err)
@@ -2059,6 +2060,10 @@ retry:
n_blocks_count_retry = 0;
free_flex_gd(flex_gd);
flex_gd = NULL;
+ if (resize_inode) {
+ iput(resize_inode);
+ resize_inode = NULL;
+ }
goto retry;
}
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index a221f1cdf704..d6c142d73d99 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -140,6 +140,29 @@ MODULE_ALIAS_FS("ext3");
MODULE_ALIAS("ext3");
#define IS_EXT3_SB(sb) ((sb)->s_bdev->bd_holder == &ext3_fs_type)
+/*
+ * This works like sb_bread() except it uses ERR_PTR for error
+ * returns. Currently with sb_bread it's impossible to distinguish
+ * between ENOMEM and EIO situations (since both result in a NULL
+ * return.
+ */
+struct buffer_head *
+ext4_sb_bread(struct super_block *sb, sector_t block, int op_flags)
+{
+ struct buffer_head *bh = sb_getblk(sb, block);
+
+ if (bh == NULL)
+ return ERR_PTR(-ENOMEM);
+ if (buffer_uptodate(bh))
+ return bh;
+ ll_rw_block(REQ_OP_READ, REQ_META | op_flags, 1, &bh);
+ wait_on_buffer(bh);
+ if (buffer_uptodate(bh))
+ return bh;
+ put_bh(bh);
+ return ERR_PTR(-EIO);
+}
+
static int ext4_verify_csum_type(struct super_block *sb,
struct ext4_super_block *es)
{
@@ -1000,14 +1023,13 @@ static void ext4_put_super(struct super_block *sb)
invalidate_bdev(sbi->journal_bdev);
ext4_blkdev_remove(sbi);
}
- if (sbi->s_ea_inode_cache) {
- ext4_xattr_destroy_cache(sbi->s_ea_inode_cache);
- sbi->s_ea_inode_cache = NULL;
- }
- if (sbi->s_ea_block_cache) {
- ext4_xattr_destroy_cache(sbi->s_ea_block_cache);
- sbi->s_ea_block_cache = NULL;
- }
+
+ ext4_xattr_destroy_cache(sbi->s_ea_inode_cache);
+ sbi->s_ea_inode_cache = NULL;
+
+ ext4_xattr_destroy_cache(sbi->s_ea_block_cache);
+ sbi->s_ea_block_cache = NULL;
+
if (sbi->s_mmp_tsk)
kthread_stop(sbi->s_mmp_tsk);
brelse(sbi->s_sbh);
@@ -1151,20 +1173,11 @@ static struct inode *ext4_nfs_get_inode(struct super_block *sb,
{
struct inode *inode;
- if (ino < EXT4_FIRST_INO(sb) && ino != EXT4_ROOT_INO)
- return ERR_PTR(-ESTALE);
- if (ino > le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count))
- return ERR_PTR(-ESTALE);
-
- /* iget isn't really right if the inode is currently unallocated!!
- *
- * ext4_read_inode will return a bad_inode if the inode had been
- * deleted, so we should be safe.
- *
+ /*
* Currently we don't know the generation for parent directory, so
* a generation of 0 means "accept any"
*/
- inode = ext4_iget_normal(sb, ino);
+ inode = ext4_iget(sb, ino, EXT4_IGET_HANDLE);
if (IS_ERR(inode))
return ERR_CAST(inode);
if (generation && inode->i_generation != generation) {
@@ -1189,6 +1202,16 @@ static struct dentry *ext4_fh_to_parent(struct super_block *sb, struct fid *fid,
ext4_nfs_get_inode);
}
+static int ext4_nfs_commit_metadata(struct inode *inode)
+{
+ struct writeback_control wbc = {
+ .sync_mode = WB_SYNC_ALL
+ };
+
+ trace_ext4_nfs_commit_metadata(inode);
+ return ext4_write_inode(inode, &wbc);
+}
+
/*
* Try to release metadata pages (indirect blocks, directories) which are
* mapped via the block device. Since these pages could have journal heads
@@ -1393,6 +1416,7 @@ static const struct export_operations ext4_export_ops = {
.fh_to_dentry = ext4_fh_to_dentry,
.fh_to_parent = ext4_fh_to_parent,
.get_parent = ext4_get_parent,
+ .commit_metadata = ext4_nfs_commit_metadata,
};
enum {
@@ -1939,7 +1963,7 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token,
#ifdef CONFIG_FS_DAX
ext4_msg(sb, KERN_WARNING,
"DAX enabled. Warning: EXPERIMENTAL, use at your own risk");
- sbi->s_mount_opt |= m->mount_opt;
+ sbi->s_mount_opt |= m->mount_opt;
#else
ext4_msg(sb, KERN_INFO, "dax option not supported");
return -1;
@@ -3842,12 +3866,12 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
if (ext4_has_feature_inline_data(sb)) {
ext4_msg(sb, KERN_ERR, "Cannot use DAX on a filesystem"
" that may contain inline data");
- sbi->s_mount_opt &= ~EXT4_MOUNT_DAX;
+ goto failed_mount;
}
if (!bdev_dax_supported(sb->s_bdev, blocksize)) {
ext4_msg(sb, KERN_ERR,
- "DAX unsupported by block device. Turning off DAX.");
- sbi->s_mount_opt &= ~EXT4_MOUNT_DAX;
+ "DAX unsupported by block device.");
+ goto failed_mount;
}
}
@@ -4075,6 +4099,14 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
sbi->s_groups_count = blocks_count;
sbi->s_blockfile_groups = min_t(ext4_group_t, sbi->s_groups_count,
(EXT4_MAX_BLOCK_FILE_PHYS / EXT4_BLOCKS_PER_GROUP(sb)));
+ if (((u64)sbi->s_groups_count * sbi->s_inodes_per_group) !=
+ le32_to_cpu(es->s_inodes_count)) {
+ ext4_msg(sb, KERN_ERR, "inodes count not valid: %u vs %llu",
+ le32_to_cpu(es->s_inodes_count),
+ ((u64)sbi->s_groups_count * sbi->s_inodes_per_group));
+ ret = -EINVAL;
+ goto failed_mount;
+ }
db_count = (sbi->s_groups_count + EXT4_DESC_PER_BLOCK(sb) - 1) /
EXT4_DESC_PER_BLOCK(sb);
if (ext4_has_feature_meta_bg(sb)) {
@@ -4094,14 +4126,6 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
ret = -ENOMEM;
goto failed_mount;
}
- if (((u64)sbi->s_groups_count * sbi->s_inodes_per_group) !=
- le32_to_cpu(es->s_inodes_count)) {
- ext4_msg(sb, KERN_ERR, "inodes count not valid: %u vs %llu",
- le32_to_cpu(es->s_inodes_count),
- ((u64)sbi->s_groups_count * sbi->s_inodes_per_group));
- ret = -EINVAL;
- goto failed_mount;
- }
bgl_lock_init(sbi->s_blockgroup_lock);
@@ -4328,7 +4352,7 @@ no_journal:
* so we can safely mount the rest of the filesystem now.
*/
- root = ext4_iget(sb, EXT4_ROOT_INO);
+ root = ext4_iget(sb, EXT4_ROOT_INO, EXT4_IGET_SPECIAL);
if (IS_ERR(root)) {
ext4_msg(sb, KERN_ERR, "get root inode failed");
ret = PTR_ERR(root);
@@ -4510,6 +4534,7 @@ failed_mount6:
percpu_counter_destroy(&sbi->s_freeinodes_counter);
percpu_counter_destroy(&sbi->s_dirs_counter);
percpu_counter_destroy(&sbi->s_dirtyclusters_counter);
+ percpu_free_rwsem(&sbi->s_journal_flag_rwsem);
failed_mount5:
ext4_ext_release(sb);
ext4_release_system_zone(sb);
@@ -4521,14 +4546,12 @@ failed_mount4:
if (EXT4_SB(sb)->rsv_conversion_wq)
destroy_workqueue(EXT4_SB(sb)->rsv_conversion_wq);
failed_mount_wq:
- if (sbi->s_ea_inode_cache) {
- ext4_xattr_destroy_cache(sbi->s_ea_inode_cache);
- sbi->s_ea_inode_cache = NULL;
- }
- if (sbi->s_ea_block_cache) {
- ext4_xattr_destroy_cache(sbi->s_ea_block_cache);
- sbi->s_ea_block_cache = NULL;
- }
+ ext4_xattr_destroy_cache(sbi->s_ea_inode_cache);
+ sbi->s_ea_inode_cache = NULL;
+
+ ext4_xattr_destroy_cache(sbi->s_ea_block_cache);
+ sbi->s_ea_block_cache = NULL;
+
if (sbi->s_journal) {
jbd2_journal_destroy(sbi->s_journal);
sbi->s_journal = NULL;
@@ -4597,7 +4620,7 @@ static struct inode *ext4_get_journal_inode(struct super_block *sb,
* happen if we iget() an unused inode, as the subsequent iput()
* will try to delete it.
*/
- journal_inode = ext4_iget(sb, journal_inum);
+ journal_inode = ext4_iget(sb, journal_inum, EXT4_IGET_SPECIAL);
if (IS_ERR(journal_inode)) {
ext4_msg(sb, KERN_ERR, "no journal found");
return NULL;
@@ -5679,7 +5702,7 @@ static int ext4_quota_enable(struct super_block *sb, int type, int format_id,
if (!qf_inums[type])
return -EPERM;
- qf_inode = ext4_iget(sb, qf_inums[type]);
+ qf_inode = ext4_iget(sb, qf_inums[type], EXT4_IGET_SPECIAL);
if (IS_ERR(qf_inode)) {
ext4_error(sb, "Bad quota inode # %lu", qf_inums[type]);
return PTR_ERR(qf_inode);
@@ -5689,9 +5712,9 @@ static int ext4_quota_enable(struct super_block *sb, int type, int format_id,
qf_inode->i_flags |= S_NOQUOTA;
lockdep_set_quota_inode(qf_inode, I_DATA_SEM_QUOTA);
err = dquot_enable(qf_inode, type, format_id, flags);
- iput(qf_inode);
if (err)
lockdep_set_quota_inode(qf_inode, I_DATA_SEM_NORMAL);
+ iput(qf_inode);
return err;
}
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index f36fc5d5b257..86ed9c686249 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -384,7 +384,7 @@ static int ext4_xattr_inode_iget(struct inode *parent, unsigned long ea_ino,
struct inode *inode;
int err;
- inode = ext4_iget(parent->i_sb, ea_ino);
+ inode = ext4_iget(parent->i_sb, ea_ino, EXT4_IGET_NORMAL);
if (IS_ERR(inode)) {
err = PTR_ERR(inode);
ext4_error(parent->i_sb,
@@ -522,14 +522,13 @@ ext4_xattr_block_get(struct inode *inode, int name_index, const char *name,
ea_idebug(inode, "name=%d.%s, buffer=%p, buffer_size=%ld",
name_index, name, buffer, (long)buffer_size);
- error = -ENODATA;
if (!EXT4_I(inode)->i_file_acl)
- goto cleanup;
+ return -ENODATA;
ea_idebug(inode, "reading block %llu",
(unsigned long long)EXT4_I(inode)->i_file_acl);
- bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);
- if (!bh)
- goto cleanup;
+ bh = ext4_sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl, REQ_PRIO);
+ if (IS_ERR(bh))
+ return PTR_ERR(bh);
ea_bdebug(bh, "b_count=%d, refcount=%d",
atomic_read(&(bh->b_count)), le32_to_cpu(BHDR(bh)->h_refcount));
error = ext4_xattr_check_block(inode, bh);
@@ -696,26 +695,23 @@ ext4_xattr_block_list(struct dentry *dentry, char *buffer, size_t buffer_size)
ea_idebug(inode, "buffer=%p, buffer_size=%ld",
buffer, (long)buffer_size);
- error = 0;
if (!EXT4_I(inode)->i_file_acl)
- goto cleanup;
+ return 0;
ea_idebug(inode, "reading block %llu",
(unsigned long long)EXT4_I(inode)->i_file_acl);
- bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);
- error = -EIO;
- if (!bh)
- goto cleanup;
+ bh = ext4_sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl, REQ_PRIO);
+ if (IS_ERR(bh))
+ return PTR_ERR(bh);
ea_bdebug(bh, "b_count=%d, refcount=%d",
atomic_read(&(bh->b_count)), le32_to_cpu(BHDR(bh)->h_refcount));
error = ext4_xattr_check_block(inode, bh);
if (error)
goto cleanup;
ext4_xattr_block_cache_insert(EA_BLOCK_CACHE(inode), bh);
- error = ext4_xattr_list_entries(dentry, BFIRST(bh), buffer, buffer_size);
-
+ error = ext4_xattr_list_entries(dentry, BFIRST(bh), buffer,
+ buffer_size);
cleanup:
brelse(bh);
-
return error;
}
@@ -830,9 +826,9 @@ int ext4_get_inode_usage(struct inode *inode, qsize_t *usage)
}
if (EXT4_I(inode)->i_file_acl) {
- bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);
- if (!bh) {
- ret = -EIO;
+ bh = ext4_sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl, REQ_PRIO);
+ if (IS_ERR(bh)) {
+ ret = PTR_ERR(bh);
goto out;
}
@@ -1031,10 +1027,8 @@ static int ext4_xattr_inode_update_ref(handle_t *handle, struct inode *ea_inode,
inode_lock(ea_inode);
ret = ext4_reserve_inode_write(handle, ea_inode, &iloc);
- if (ret) {
- iloc.bh = NULL;
+ if (ret)
goto out;
- }
ref_count = ext4_xattr_inode_get_ref(ea_inode);
ref_count += ref_change;
@@ -1080,12 +1074,10 @@ static int ext4_xattr_inode_update_ref(handle_t *handle, struct inode *ea_inode,
}
ret = ext4_mark_iloc_dirty(handle, ea_inode, &iloc);
- iloc.bh = NULL;
if (ret)
ext4_warning_inode(ea_inode,
"ext4_mark_iloc_dirty() failed ret=%d", ret);
out:
- brelse(iloc.bh);
inode_unlock(ea_inode);
return ret;
}
@@ -1388,6 +1380,12 @@ retry:
bh = ext4_getblk(handle, ea_inode, block, 0);
if (IS_ERR(bh))
return PTR_ERR(bh);
+ if (!bh) {
+ WARN_ON_ONCE(1);
+ EXT4_ERROR_INODE(ea_inode,
+ "ext4_getblk() return bh = NULL");
+ return -EFSCORRUPTED;
+ }
ret = ext4_journal_get_write_access(handle, bh);
if (ret)
goto out;
@@ -1484,7 +1482,8 @@ ext4_xattr_inode_cache_find(struct inode *inode, const void *value,
}
while (ce) {
- ea_inode = ext4_iget(inode->i_sb, ce->e_value);
+ ea_inode = ext4_iget(inode->i_sb, ce->e_value,
+ EXT4_IGET_NORMAL);
if (!IS_ERR(ea_inode) &&
!is_bad_inode(ea_inode) &&
(EXT4_I(ea_inode)->i_flags & EXT4_EA_INODE_FL) &&
@@ -1819,16 +1818,15 @@ ext4_xattr_block_find(struct inode *inode, struct ext4_xattr_info *i,
if (EXT4_I(inode)->i_file_acl) {
/* The inode already has an extended attribute block. */
- bs->bh = sb_bread(sb, EXT4_I(inode)->i_file_acl);
- error = -EIO;
- if (!bs->bh)
- goto cleanup;
+ bs->bh = ext4_sb_bread(sb, EXT4_I(inode)->i_file_acl, REQ_PRIO);
+ if (IS_ERR(bs->bh))
+ return PTR_ERR(bs->bh);
ea_bdebug(bs->bh, "b_count=%d, refcount=%d",
atomic_read(&(bs->bh->b_count)),
le32_to_cpu(BHDR(bs->bh)->h_refcount));
error = ext4_xattr_check_block(inode, bs->bh);
if (error)
- goto cleanup;
+ return error;
/* Find the named attribute. */
bs->s.base = BHDR(bs->bh);
bs->s.first = BFIRST(bs->bh);
@@ -1837,13 +1835,10 @@ ext4_xattr_block_find(struct inode *inode, struct ext4_xattr_info *i,
error = xattr_find_entry(inode, &bs->s.here, bs->s.end,
i->name_index, i->name, 1);
if (error && error != -ENODATA)
- goto cleanup;
+ return error;
bs->s.not_found = error;
}
- error = 0;
-
-cleanup:
- return error;
+ return 0;
}
static int
@@ -2272,12 +2267,14 @@ static struct buffer_head *ext4_xattr_get_block(struct inode *inode)
if (!EXT4_I(inode)->i_file_acl)
return NULL;
- bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);
- if (!bh)
- return ERR_PTR(-EIO);
+ bh = ext4_sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl, REQ_PRIO);
+ if (IS_ERR(bh))
+ return bh;
error = ext4_xattr_check_block(inode, bh);
- if (error)
+ if (error) {
+ brelse(bh);
return ERR_PTR(error);
+ }
return bh;
}
@@ -2397,6 +2394,8 @@ retry_inode:
error = ext4_xattr_block_set(handle, inode, &i, &bs);
} else if (error == -ENOSPC) {
if (EXT4_I(inode)->i_file_acl && !bs.s.base) {
+ brelse(bs.bh);
+ bs.bh = NULL;
error = ext4_xattr_block_find(inode, &i, &bs);
if (error)
goto cleanup;
@@ -2617,6 +2616,8 @@ out:
kfree(buffer);
if (is)
brelse(is->iloc.bh);
+ if (bs)
+ brelse(bs->bh);
kfree(is);
kfree(bs);
@@ -2696,7 +2697,6 @@ int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
struct ext4_inode *raw_inode, handle_t *handle)
{
struct ext4_xattr_ibody_header *header;
- struct buffer_head *bh;
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
static unsigned int mnt_count;
size_t min_offs;
@@ -2722,7 +2722,7 @@ retry:
base = IFIRST(header);
end = (void *)raw_inode + EXT4_SB(inode->i_sb)->s_inode_size;
min_offs = end - base;
- total_ino = sizeof(struct ext4_xattr_ibody_header);
+ total_ino = sizeof(struct ext4_xattr_ibody_header) + sizeof(u32);
error = xattr_check_inode(inode, header, end);
if (error)
@@ -2737,13 +2737,18 @@ retry:
* EA block can hold new_extra_isize bytes.
*/
if (EXT4_I(inode)->i_file_acl) {
- bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);
- error = -EIO;
- if (!bh)
+ struct buffer_head *bh;
+
+ bh = ext4_sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl, REQ_PRIO);
+ if (IS_ERR(bh)) {
+ error = PTR_ERR(bh);
goto cleanup;
+ }
error = ext4_xattr_check_block(inode, bh);
- if (error)
+ if (error) {
+ brelse(bh);
goto cleanup;
+ }
base = BHDR(bh);
end = bh->b_data + bh->b_size;
min_offs = end - base;
@@ -2892,11 +2897,12 @@ int ext4_xattr_delete_inode(handle_t *handle, struct inode *inode,
}
if (EXT4_I(inode)->i_file_acl) {
- bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);
- if (!bh) {
- EXT4_ERROR_INODE(inode, "block %llu read error",
- EXT4_I(inode)->i_file_acl);
- error = -EIO;
+ bh = ext4_sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl, REQ_PRIO);
+ if (IS_ERR(bh)) {
+ error = PTR_ERR(bh);
+ if (error == -EIO)
+ EXT4_ERROR_INODE(inode, "block %llu read error",
+ EXT4_I(inode)->i_file_acl);
goto cleanup;
}
error = ext4_xattr_check_block(inode, bh);
@@ -3049,8 +3055,10 @@ ext4_xattr_block_cache_find(struct inode *inode,
while (ce) {
struct buffer_head *bh;
- bh = sb_bread(inode->i_sb, ce->e_value);
- if (!bh) {
+ bh = ext4_sb_bread(inode->i_sb, ce->e_value, REQ_PRIO);
+ if (IS_ERR(bh)) {
+ if (PTR_ERR(bh) == -ENOMEM)
+ return NULL;
EXT4_ERROR_INODE(inode, "block %lu read error",
(unsigned long)ce->e_value);
} else if (ext4_xattr_cmp(header, BHDR(bh)) == 0) {
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.