Current ext4_expand_extra_isize just tries to expand extra isize, if
someone is holding xattr lock or some check fails, it will give up.
So rename its name to ext4_try_to_expand_extra_isize.
Besides that, we clean up unnecessary check and move some relative checks
into it.
Signed-off-by: Miao Xie <miaoxie@xxxxxxxxxx>
Reviewed-by: Wang Shilong <wshilong@xxxxxxx>
---
fs/ext4/inode.c | 67 ++++++++++++++++++++++++---------------------------------
fs/ext4/xattr.c | 11 +++++++++-
2 files changed, 38 insertions(+), 40 deletions(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 4af3edc..01a9340 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -5632,21 +5632,35 @@ ext4_reserve_inode_write(handle_t *handle, struct inode *inode,
* Expand an inode by new_extra_isize bytes.
* Returns 0 on success or negative error number on failure.
*/
-static int ext4_expand_extra_isize(struct inode *inode,
- unsigned int new_extra_isize,
- struct ext4_iloc iloc,
- handle_t *handle)
+static int ext4_try_to_expand_extra_isize(struct inode *inode,
+ unsigned int new_extra_isize,
+ struct ext4_iloc iloc,
+ handle_t *handle)
{
struct ext4_inode *raw_inode;
struct ext4_xattr_ibody_header *header;
int no_expand;
int error;
- if (EXT4_I(inode)->i_extra_isize >= new_extra_isize)
- return 0;
+ if (ext4_test_inode_state(inode, EXT4_STATE_NO_EXPAND))
+ return -EOVERFLOW;
+
+ /*
+ * In nojournal mode, we can immediately attempt to expand
+ * the inode. When journaled, we first need to obtain extra
+ * buffer credits since we may write into the EA block
+ * with this same handle. If journal_extend fails, then it will
+ * only result in a minor loss of functionality for that inode.
+ * If this is felt to be critical, then e2fsck should be run to
+ * force a large enough s_min_extra_isize.
+ */
+ if (ext4_handle_valid(handle) &&
+ jbd2_journal_extend(handle,
+ EXT4_DATA_TRANS_BLOCKS(inode->i_sb)) != 0)
+ return -ENOSPC;
if (ext4_write_trylock_xattr(inode, &no_expand) == 0)
- return 0;
+ return -EBUSY;
raw_inode = ext4_raw_inode(&iloc);
@@ -5673,6 +5687,7 @@ static int ext4_expand_extra_isize(struct inode *inode,
no_expand = 1;
}
ext4_write_unlock_xattr(inode, &no_expand);
+
return error;
}
@@ -5693,44 +5708,18 @@ int ext4_mark_inode_dirty(handle_t *handle, struct inode *inode)
{
struct ext4_iloc iloc;
struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
- static unsigned int mnt_count;
- int err, ret;
+ int err;
might_sleep();
trace_ext4_mark_inode_dirty(inode, _RET_IP_);
err = ext4_reserve_inode_write(handle, inode, &iloc);
if (err)
return err;
- if (EXT4_I(inode)->i_extra_isize < sbi->s_want_extra_isize &&
- !ext4_test_inode_state(inode, EXT4_STATE_NO_EXPAND)) {
- /*
- * In nojournal mode, we can immediately attempt to expand
- * the inode. When journaled, we first need to obtain extra
- * buffer credits since we may write into the EA block
- * with this same handle. If journal_extend fails, then it will
- * only result in a minor loss of functionality for that inode.
- * If this is felt to be critical, then e2fsck should be run to
- * force a large enough s_min_extra_isize.
- */
- if (!ext4_handle_valid(handle) ||
- jbd2_journal_extend(handle,
- EXT4_DATA_TRANS_BLOCKS(inode->i_sb)) == 0) {
- ret = ext4_expand_extra_isize(inode,
- sbi->s_want_extra_isize,
- iloc, handle);
- if (ret) {
- if (mnt_count !=
- le16_to_cpu(sbi->s_es->s_mnt_count)) {
- ext4_warning(inode->i_sb,
- "Unable to expand inode %lu. Delete"
- " some EAs or run e2fsck.",
- inode->i_ino);
- mnt_count =
- le16_to_cpu(sbi->s_es->s_mnt_count);
- }
- }
- }
- }
+
+ if (EXT4_I(inode)->i_extra_isize < sbi->s_want_extra_isize)
+ ext4_try_to_expand_extra_isize(inode, sbi->s_want_extra_isize,
+ iloc, handle);
+
return ext4_mark_iloc_dirty(handle, inode, &iloc);
}
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 12ee5fb..3c6c225 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -1465,12 +1465,14 @@ int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
{
struct ext4_xattr_ibody_header *header;
struct buffer_head *bh = NULL;
+ struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
+ static unsigned int mnt_count;
size_t min_offs;
size_t ifree, bfree;
int total_ino;
void *base, *end;
int error = 0, tried_min_extra_isize = 0;
- int s_min_extra_isize = le16_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_min_extra_isize);
+ int s_min_extra_isize = le16_to_cpu(sbi->s_es->s_min_extra_isize);
int isize_diff; /* How much do we need to grow i_extra_isize */
retry:
@@ -1558,6 +1560,13 @@ int ext4_expand_extra_isize_ea(struct inode *inode, int new_extra_isize,
cleanup:
brelse(bh);
+
+ if (mnt_count != le16_to_cpu(sbi->s_es->s_mnt_count)) {
+ ext4_warning(inode->i_sb, "Unable to expand inode %lu. Delete some EAs or run e2fsck.",
+ inode->i_ino);
+ mnt_count = le16_to_cpu(sbi->s_es->s_mnt_count);
+ }
+
return error;
}
--
2.5.0
