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ext4: Use bitops to read/modify i_flags in struct ext4_inode_info

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At several places we modify EXT4_I(inode)->i_flags without holding
i_mutex (ext4_do_update_inode, ...). These modifications are racy and
we can lose updates to i_flags. So convert handling of i_flags to use
bitops which are atomic.

https://bugzilla.kernel.org/show_bug.cgi?id=15792

Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Dmitry Monakhov 2010-05-16 22:00:00 -04:00 committed by Theodore Ts'o
parent 24676da469
commit 12e9b89200
13 changed files with 136 additions and 56 deletions
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4
fs/ext4/dir.c
View File

@ -110,7 +110,7 @@ static int ext4_readdir(struct file *filp,
if (EXT4_HAS_COMPAT_FEATURE(inode->i_sb,
EXT4_FEATURE_COMPAT_DIR_INDEX) &&
((EXT4_I(inode)->i_flags & EXT4_INDEX_FL) ||
((ext4_test_inode_flag(inode, EXT4_INODE_INDEX)) ||
((inode->i_size >> sb->s_blocksize_bits) == 1))) {
err = ext4_dx_readdir(filp, dirent, filldir);
if (err != ERR_BAD_DX_DIR) {
@ -121,7 +121,7 @@ static int ext4_readdir(struct file *filp,
* We don't set the inode dirty flag since it's not
* critical that it get flushed back to the disk.
*/
EXT4_I(filp->f_path.dentry->d_inode)->i_flags &= ~EXT4_INDEX_FL;
ext4_clear_inode_flag(filp->f_path.dentry->d_inode, EXT4_INODE_INDEX);
}
stored = 0;
offset = filp->f_pos & (sb->s_blocksize - 1);

109
fs/ext4/ext4.h
View File

@ -344,6 +344,83 @@ static inline __u32 ext4_mask_flags(umode_t mode, __u32 flags)
return flags & EXT4_OTHER_FLMASK;
}
/*
* Inode flags used for atomic set/get
*/
enum {
EXT4_INODE_SECRM = 0, /* Secure deletion */
EXT4_INODE_UNRM = 1, /* Undelete */
EXT4_INODE_COMPR = 2, /* Compress file */
EXT4_INODE_SYNC = 3, /* Synchronous updates */
EXT4_INODE_IMMUTABLE = 4, /* Immutable file */
EXT4_INODE_APPEND = 5, /* writes to file may only append */
EXT4_INODE_NODUMP = 6, /* do not dump file */
EXT4_INODE_NOATIME = 7, /* do not update atime */
/* Reserved for compression usage... */
EXT4_INODE_DIRTY = 8,
EXT4_INODE_COMPRBLK = 9, /* One or more compressed clusters */
EXT4_INODE_NOCOMPR = 10, /* Don't compress */
EXT4_INODE_ECOMPR = 11, /* Compression error */
/* End compression flags --- maybe not all used */
EXT4_INODE_INDEX = 12, /* hash-indexed directory */
EXT4_INODE_IMAGIC = 13, /* AFS directory */
EXT4_INODE_JOURNAL_DATA = 14, /* file data should be journaled */
EXT4_INODE_NOTAIL = 15, /* file tail should not be merged */
EXT4_INODE_DIRSYNC = 16, /* dirsync behaviour (directories only) */
EXT4_INODE_TOPDIR = 17, /* Top of directory hierarchies*/
EXT4_INODE_HUGE_FILE = 18, /* Set to each huge file */
EXT4_INODE_EXTENTS = 19, /* Inode uses extents */
EXT4_INODE_EA_INODE = 21, /* Inode used for large EA */
EXT4_INODE_EOFBLOCKS = 22, /* Blocks allocated beyond EOF */
EXT4_INODE_RESERVED = 31, /* reserved for ext4 lib */
};
#define TEST_FLAG_VALUE(FLAG) (EXT4_##FLAG##_FL == (1 << EXT4_INODE_##FLAG))
#define CHECK_FLAG_VALUE(FLAG) if (!TEST_FLAG_VALUE(FLAG)) { \
printk(KERN_EMERG "EXT4 flag fail: " #FLAG ": %d %d\n", \
EXT4_##FLAG##_FL, EXT4_INODE_##FLAG); BUG_ON(1); }
/*
* Since it's pretty easy to mix up bit numbers and hex values, and we
* can't do a compile-time test for ENUM values, we use a run-time
* test to make sure that EXT4_XXX_FL is consistent with respect to
* EXT4_INODE_XXX. If all is well the printk and BUG_ON will all drop
* out so it won't cost any extra space in the compiled kernel image.
* But it's important that these values are the same, since we are
* using EXT4_INODE_XXX to test for the flag values, but EXT4_XX_FL
* must be consistent with the values of FS_XXX_FL defined in
* include/linux/fs.h and the on-disk values found in ext2, ext3, and
* ext4 filesystems, and of course the values defined in e2fsprogs.
*
* It's not paranoia if the Murphy's Law really *is* out to get you. :-)
*/
static inline void ext4_check_flag_values(void)
{
CHECK_FLAG_VALUE(SECRM);
CHECK_FLAG_VALUE(UNRM);
CHECK_FLAG_VALUE(COMPR);
CHECK_FLAG_VALUE(SYNC);
CHECK_FLAG_VALUE(IMMUTABLE);
CHECK_FLAG_VALUE(APPEND);
CHECK_FLAG_VALUE(NODUMP);
CHECK_FLAG_VALUE(NOATIME);
CHECK_FLAG_VALUE(DIRTY);
CHECK_FLAG_VALUE(COMPRBLK);
CHECK_FLAG_VALUE(NOCOMPR);
CHECK_FLAG_VALUE(ECOMPR);
CHECK_FLAG_VALUE(INDEX);
CHECK_FLAG_VALUE(IMAGIC);
CHECK_FLAG_VALUE(JOURNAL_DATA);
CHECK_FLAG_VALUE(NOTAIL);
CHECK_FLAG_VALUE(DIRSYNC);
CHECK_FLAG_VALUE(TOPDIR);
CHECK_FLAG_VALUE(HUGE_FILE);
CHECK_FLAG_VALUE(EXTENTS);
CHECK_FLAG_VALUE(EA_INODE);
CHECK_FLAG_VALUE(EOFBLOCKS);
CHECK_FLAG_VALUE(RESERVED);
}
/* Used to pass group descriptor data when online resize is done */
struct ext4_new_group_input {
__u32 group; /* Group number for this data */
@ -639,9 +716,8 @@ struct ext4_ext_cache {
*/
struct ext4_inode_info {
__le32 i_data[15]; /* unconverted */
__u32 i_flags;
ext4_fsblk_t i_file_acl;
__u32 i_dtime;
ext4_fsblk_t i_file_acl;
/*
* i_block_group is the number of the block group which contains
@ -652,6 +728,7 @@ struct ext4_inode_info {
*/
ext4_group_t i_block_group;
unsigned long i_state_flags; /* Dynamic state flags */
unsigned long i_flags;
ext4_lblk_t i_dir_start_lookup;
#ifdef CONFIG_EXT4_FS_XATTR
@ -1087,20 +1164,22 @@ enum {
EXT4_STATE_DIO_UNWRITTEN, /* need convert on dio done*/
};
static inline int ext4_test_inode_state(struct inode *inode, int bit)
{
return test_bit(bit, &EXT4_I(inode)->i_state_flags);
#define EXT4_INODE_BIT_FNS(name, field) \
static inline int ext4_test_inode_##name(struct inode *inode, int bit) \
{ \
return test_bit(bit, &EXT4_I(inode)->i_##field); \
} \
static inline void ext4_set_inode_##name(struct inode *inode, int bit) \
{ \
set_bit(bit, &EXT4_I(inode)->i_##field); \
} \
static inline void ext4_clear_inode_##name(struct inode *inode, int bit) \
{ \
clear_bit(bit, &EXT4_I(inode)->i_##field); \
}
static inline void ext4_set_inode_state(struct inode *inode, int bit)
{
set_bit(bit, &EXT4_I(inode)->i_state_flags);
}
static inline void ext4_clear_inode_state(struct inode *inode, int bit)
{
clear_bit(bit, &EXT4_I(inode)->i_state_flags);
}
EXT4_INODE_BIT_FNS(flag, flags)
EXT4_INODE_BIT_FNS(state, state_flags)
#else
/* Assume that user mode programs are passing in an ext4fs superblock, not
* a kernel struct super_block. This will allow us to call the feature-test
@ -1287,7 +1366,7 @@ struct ext4_dir_entry_2 {
#define is_dx(dir) (EXT4_HAS_COMPAT_FEATURE(dir->i_sb, \
EXT4_FEATURE_COMPAT_DIR_INDEX) && \
(EXT4_I(dir)->i_flags & EXT4_INDEX_FL))
ext4_test_inode_flag((dir), EXT4_INODE_INDEX))
#define EXT4_DIR_LINK_MAX(dir) (!is_dx(dir) && (dir)->i_nlink >= EXT4_LINK_MAX)
#define EXT4_DIR_LINK_EMPTY(dir) ((dir)->i_nlink == 2 || (dir)->i_nlink == 1)

8
fs/ext4/ext4_jbd2.h
View File

@ -273,7 +273,7 @@ static inline int ext4_should_journal_data(struct inode *inode)
return 1;
if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA)
return 1;
if (EXT4_I(inode)->i_flags & EXT4_JOURNAL_DATA_FL)
if (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA))
return 1;
return 0;
}
@ -284,7 +284,7 @@ static inline int ext4_should_order_data(struct inode *inode)
return 0;
if (!S_ISREG(inode->i_mode))
return 0;
if (EXT4_I(inode)->i_flags & EXT4_JOURNAL_DATA_FL)
if (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA))
return 0;
if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_ORDERED_DATA)
return 1;
@ -297,7 +297,7 @@ static inline int ext4_should_writeback_data(struct inode *inode)
return 0;
if (EXT4_JOURNAL(inode) == NULL)
return 1;
if (EXT4_I(inode)->i_flags & EXT4_JOURNAL_DATA_FL)
if (ext4_test_inode_flag(inode, EXT4_INODE_JOURNAL_DATA))
return 0;
if (test_opt(inode->i_sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA)
return 1;
@ -321,7 +321,7 @@ static inline int ext4_should_dioread_nolock(struct inode *inode)
return 0;
if (!S_ISREG(inode->i_mode))
return 0;
if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
return 0;
if (ext4_should_journal_data(inode))
return 0;

10
fs/ext4/extents.c
View File

@ -3498,7 +3498,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
map->m_flags |= EXT4_MAP_UNINIT;
}
if (unlikely(EXT4_I(inode)->i_flags & EXT4_EOFBLOCKS_FL)) {
if (unlikely(ext4_test_inode_flag(inode, EXT4_INODE_EOFBLOCKS))) {
if (unlikely(!eh->eh_entries)) {
EXT4_ERROR_INODE(inode,
"eh->eh_entries == 0 ee_block %d",
@ -3509,7 +3509,7 @@ int ext4_ext_map_blocks(handle_t *handle, struct inode *inode,
last_ex = EXT_LAST_EXTENT(eh);
if (map->m_lblk + ar.len > le32_to_cpu(last_ex->ee_block)
+ ext4_ext_get_actual_len(last_ex))
EXT4_I(inode)->i_flags &= ~EXT4_EOFBLOCKS_FL;
ext4_clear_inode_flag(inode, EXT4_INODE_EOFBLOCKS);
}
err = ext4_ext_insert_extent(handle, inode, path, &newex, flags);
if (err) {
@ -3650,7 +3650,7 @@ static void ext4_falloc_update_inode(struct inode *inode,
* can proceed even if the new size is the same as i_size.
*/
if (new_size > i_size_read(inode))
EXT4_I(inode)->i_flags |= EXT4_EOFBLOCKS_FL;
ext4_set_inode_flag(inode, EXT4_INODE_EOFBLOCKS);
}
}
@ -3677,7 +3677,7 @@ long ext4_fallocate(struct inode *inode, int mode, loff_t offset, loff_t len)
* currently supporting (pre)allocate mode for extent-based
* files _only_
*/
if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
return -EOPNOTSUPP;
/* preallocation to directories is currently not supported */
@ -3922,7 +3922,7 @@ int ext4_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
int error = 0;
/* fallback to generic here if not in extents fmt */
if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
return generic_block_fiemap(inode, fieinfo, start, len,
ext4_get_block);

2
fs/ext4/file.c
View File

@ -66,7 +66,7 @@ ext4_file_write(struct kiocb *iocb, const struct iovec *iov,
* is smaller than s_maxbytes, which is for extent-mapped files.
*/
if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL)) {
if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) {
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
size_t length = iov_length(iov, nr_segs);

4
fs/ext4/ialloc.c
View File

@ -492,7 +492,7 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent,
if (S_ISDIR(mode) &&
((parent == sb->s_root->d_inode) ||
(EXT4_I(parent)->i_flags & EXT4_TOPDIR_FL))) {
(ext4_test_inode_flag(parent, EXT4_INODE_TOPDIR)))) {
int best_ndir = inodes_per_group;
int ret = -1;
@ -1038,7 +1038,7 @@ got:
if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS)) {
/* set extent flag only for directory, file and normal symlink*/
if (S_ISDIR(mode) || S_ISREG(mode) || S_ISLNK(mode)) {
EXT4_I(inode)->i_flags |= EXT4_EXTENTS_FL;
ext4_set_inode_flag(inode, EXT4_INODE_EXTENTS);
ext4_ext_tree_init(handle, inode);
}
}

30
fs/ext4/inode.c
View File

@ -931,7 +931,7 @@ static int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
int count = 0;
ext4_fsblk_t first_block = 0;
J_ASSERT(!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL));
J_ASSERT(!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)));
J_ASSERT(handle != NULL || (flags & EXT4_GET_BLOCKS_CREATE) == 0);
depth = ext4_block_to_path(inode, map->m_lblk, offsets,
&blocks_to_boundary);
@ -1059,7 +1059,7 @@ static int ext4_indirect_calc_metadata_amount(struct inode *inode,
*/
static int ext4_calc_metadata_amount(struct inode *inode, sector_t lblock)
{
if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL)
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
return ext4_ext_calc_metadata_amount(inode, lblock);
return ext4_indirect_calc_metadata_amount(inode, lblock);
@ -1236,7 +1236,7 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode,
* file system block.
*/
down_read((&EXT4_I(inode)->i_data_sem));
if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL) {
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) {
retval = ext4_ext_map_blocks(handle, inode, map, 0);
} else {
retval = ext4_ind_map_blocks(handle, inode, map, 0);
@ -1295,7 +1295,7 @@ int ext4_map_blocks(handle_t *handle, struct inode *inode,
* We need to check for EXT4 here because migrate
* could have changed the inode type in between
*/
if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL) {
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) {
retval = ext4_ext_map_blocks(handle, inode, map, flags);
} else {
retval = ext4_ind_map_blocks(handle, inode, map, flags);
@ -2325,7 +2325,7 @@ static void mpage_add_bh_to_extent(struct mpage_da_data *mpd,
goto flush_it;
/* check if thereserved journal credits might overflow */
if (!(EXT4_I(mpd->inode)->i_flags & EXT4_EXTENTS_FL)) {
if (!(ext4_test_inode_flag(mpd->inode, EXT4_INODE_EXTENTS))) {
if (nrblocks >= EXT4_MAX_TRANS_DATA) {
/*
* With non-extent format we are limited by the journal
@ -2779,7 +2779,7 @@ static int ext4_da_writepages_trans_blocks(struct inode *inode)
* number of contiguous block. So we will limit
* number of contiguous block to a sane value
*/
if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL) &&
if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) &&
(max_blocks > EXT4_MAX_TRANS_DATA))
max_blocks = EXT4_MAX_TRANS_DATA;
@ -3995,7 +3995,7 @@ static ssize_t ext4_direct_IO(int rw, struct kiocb *iocb,
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL)
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
return ext4_ext_direct_IO(rw, iocb, iov, offset, nr_segs);
return ext4_ind_direct_IO(rw, iocb, iov, offset, nr_segs);
@ -4631,12 +4631,12 @@ void ext4_truncate(struct inode *inode)
if (!ext4_can_truncate(inode))
return;
EXT4_I(inode)->i_flags &= ~EXT4_EOFBLOCKS_FL;
ext4_clear_inode_flag(inode, EXT4_INODE_EOFBLOCKS);
if (inode->i_size == 0 && !test_opt(inode->i_sb, NO_AUTO_DA_ALLOC))
ext4_set_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE);
if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL) {
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) {
ext4_ext_truncate(inode);
return;
}
@ -5473,7 +5473,7 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
}
if (attr->ia_valid & ATTR_SIZE) {
if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL)) {
if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))) {
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
if (attr->ia_size > sbi->s_bitmap_maxbytes) {
@ -5486,7 +5486,7 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
if (S_ISREG(inode->i_mode) &&
attr->ia_valid & ATTR_SIZE &&
(attr->ia_size < inode->i_size ||
(EXT4_I(inode)->i_flags & EXT4_EOFBLOCKS_FL))) {
(ext4_test_inode_flag(inode, EXT4_INODE_EOFBLOCKS)))) {
handle_t *handle;
handle = ext4_journal_start(inode, 3);
@ -5518,7 +5518,7 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
}
}
/* ext4_truncate will clear the flag */
if ((EXT4_I(inode)->i_flags & EXT4_EOFBLOCKS_FL))
if ((ext4_test_inode_flag(inode, EXT4_INODE_EOFBLOCKS)))
ext4_truncate(inode);
}
@ -5594,7 +5594,7 @@ static int ext4_indirect_trans_blocks(struct inode *inode, int nrblocks,
static int ext4_index_trans_blocks(struct inode *inode, int nrblocks, int chunk)
{
if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
return ext4_indirect_trans_blocks(inode, nrblocks, chunk);
return ext4_ext_index_trans_blocks(inode, nrblocks, chunk);
}
@ -5929,9 +5929,9 @@ int ext4_change_inode_journal_flag(struct inode *inode, int val)
*/
if (val)
EXT4_I(inode)->i_flags |= EXT4_JOURNAL_DATA_FL;
ext4_set_inode_flag(inode, EXT4_INODE_JOURNAL_DATA);
else
EXT4_I(inode)->i_flags &= ~EXT4_JOURNAL_DATA_FL;
ext4_clear_inode_flag(inode, EXT4_INODE_JOURNAL_DATA);
ext4_set_aops(inode);
jbd2_journal_unlock_updates(journal);

4
fs/ext4/mballoc.c
View File

@ -2006,7 +2006,7 @@ ext4_mb_regular_allocator(struct ext4_allocation_context *ac)
sbi = EXT4_SB(sb);
ngroups = ext4_get_groups_count(sb);
/* non-extent files are limited to low blocks/groups */
if (!(EXT4_I(ac->ac_inode)->i_flags & EXT4_EXTENTS_FL))
if (!(ext4_test_inode_flag(ac->ac_inode, EXT4_INODE_EXTENTS)))
ngroups = sbi->s_blockfile_groups;
BUG_ON(ac->ac_status == AC_STATUS_FOUND);
@ -3171,7 +3171,7 @@ ext4_mb_use_preallocated(struct ext4_allocation_context *ac)
continue;
/* non-extent files can't have physical blocks past 2^32 */
if (!(EXT4_I(ac->ac_inode)->i_flags & EXT4_EXTENTS_FL) &&
if (!(ext4_test_inode_flag(ac->ac_inode, EXT4_INODE_EXTENTS)) &&
pa->pa_pstart + pa->pa_len > EXT4_MAX_BLOCK_FILE_PHYS)
continue;

2
fs/ext4/migrate.c
View File

@ -475,7 +475,7 @@ int ext4_ext_migrate(struct inode *inode)
*/
if (!EXT4_HAS_INCOMPAT_FEATURE(inode->i_sb,
EXT4_FEATURE_INCOMPAT_EXTENTS) ||
(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
return -EINVAL;
if (S_ISLNK(inode->i_mode) && inode->i_blocks == 0)

4
fs/ext4/move_extent.c
View File

@ -977,11 +977,11 @@ mext_check_arguments(struct inode *orig_inode,
}
/* Ext4 move extent supports only extent based file */
if (!(EXT4_I(orig_inode)->i_flags & EXT4_EXTENTS_FL)) {
if (!(ext4_test_inode_flag(orig_inode, EXT4_INODE_EXTENTS))) {
ext4_debug("ext4 move extent: orig file is not extents "
"based file [ino:orig %lu]\n", orig_inode->i_ino);
return -EOPNOTSUPP;
} else if (!(EXT4_I(donor_inode)->i_flags & EXT4_EXTENTS_FL)) {
} else if (!(ext4_test_inode_flag(donor_inode, EXT4_INODE_EXTENTS))) {
ext4_debug("ext4 move extent: donor file is not extents "
"based file [ino:donor %lu]\n", donor_inode->i_ino);
return -EOPNOTSUPP;

10
fs/ext4/namei.c
View File

@ -656,7 +656,7 @@ int ext4_htree_fill_tree(struct file *dir_file, __u32 start_hash,
dxtrace(printk(KERN_DEBUG "In htree_fill_tree, start hash: %x:%x\n",
start_hash, start_minor_hash));
dir = dir_file->f_path.dentry->d_inode;
if (!(EXT4_I(dir)->i_flags & EXT4_INDEX_FL)) {
if (!(ext4_test_inode_flag(dir, EXT4_INODE_INDEX))) {
hinfo.hash_version = EXT4_SB(dir->i_sb)->s_def_hash_version;
if (hinfo.hash_version <= DX_HASH_TEA)
hinfo.hash_version +=
@ -801,7 +801,7 @@ static void ext4_update_dx_flag(struct inode *inode)
{
if (!EXT4_HAS_COMPAT_FEATURE(inode->i_sb,
EXT4_FEATURE_COMPAT_DIR_INDEX))
EXT4_I(inode)->i_flags &= ~EXT4_INDEX_FL;
ext4_clear_inode_flag(inode, EXT4_INODE_INDEX);
}
/*
@ -1416,7 +1416,7 @@ static int make_indexed_dir(handle_t *handle, struct dentry *dentry,
brelse(bh);
return retval;
}
EXT4_I(dir)->i_flags |= EXT4_INDEX_FL;
ext4_set_inode_flag(dir, EXT4_INODE_INDEX);
data1 = bh2->b_data;
memcpy (data1, de, len);
@ -1489,7 +1489,7 @@ static int ext4_add_entry(handle_t *handle, struct dentry *dentry,
retval = ext4_dx_add_entry(handle, dentry, inode);
if (!retval || (retval != ERR_BAD_DX_DIR))
return retval;
EXT4_I(dir)->i_flags &= ~EXT4_INDEX_FL;
ext4_clear_inode_flag(dir, EXT4_INODE_INDEX);
dx_fallback++;
ext4_mark_inode_dirty(handle, dir);
}
@ -2294,7 +2294,7 @@ retry:
}
} else {
/* clear the extent format for fast symlink */
EXT4_I(inode)->i_flags &= ~EXT4_EXTENTS_FL;
ext4_clear_inode_flag(inode, EXT4_INODE_EXTENTS);
inode->i_op = &ext4_fast_symlink_inode_operations;
memcpy((char *)&EXT4_I(inode)->i_data, symname, l);
inode->i_size = l-1;

1
fs/ext4/super.c
View File

@ -4148,6 +4148,7 @@ static int __init init_ext4_fs(void)
{
int err;
ext4_check_flag_values();
err = init_ext4_system_zone();
if (err)
return err;

4
fs/ext4/xattr.c
View File

@ -818,7 +818,7 @@ inserted:
EXT4_I(inode)->i_block_group);
/* non-extent files can't have physical blocks past 2^32 */
if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
goal = goal & EXT4_MAX_BLOCK_FILE_PHYS;
block = ext4_new_meta_blocks(handle, inode,
@ -826,7 +826,7 @@ inserted:
if (error)
goto cleanup;
if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))
BUG_ON(block > EXT4_MAX_BLOCK_FILE_PHYS);
ea_idebug(inode, "creating block %d", block);