From b347e2bcd18eba7ed44659d12e4a39a9b5bdc873 Mon Sep 17 00:00:00 2001 From: Tahsin Erdogan Date: Wed, 21 Jun 2017 22:20:32 -0400 Subject: ext4: retry storing value in external inode with xattr block too When value size is <= EXT4_XATTR_MIN_LARGE_EA_SIZE(), and it doesn't fit in either inline or xattr block, a second try is made to store it in an external inode while storing the entry itself in inline area. There should also be an attempt to store the entry in xattr block. This patch adds a retry loop to do that. It also makes the caller the sole decider on whether to store a value in an external inode. Signed-off-by: Tahsin Erdogan Signed-off-by: Theodore Ts'o --- fs/ext4/xattr.c | 35 ++++++++++++++++++----------------- 1 file changed, 18 insertions(+), 17 deletions(-) (limited to 'fs/ext4/xattr.c') diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index 9932254c3de9..ab94d6ee496b 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -909,11 +909,6 @@ static int ext4_xattr_set_entry(struct ext4_xattr_info *i, int in_inode = i->in_inode; int rc; - if (ext4_has_feature_ea_inode(inode->i_sb) && - (EXT4_XATTR_SIZE(i->value_len) > - EXT4_XATTR_MIN_LARGE_EA_SIZE(inode->i_sb->s_blocksize))) - in_inode = 1; - /* Compute min_offs and last. */ last = s->first; for (; !IS_LAST_ENTRY(last); last = EXT4_XATTR_NEXT(last)) { @@ -1095,7 +1090,8 @@ ext4_xattr_block_set(handle_t *handle, struct inode *inode, { struct super_block *sb = inode->i_sb; struct buffer_head *new_bh = NULL; - struct ext4_xattr_search *s = &bs->s; + struct ext4_xattr_search s_copy = bs->s; + struct ext4_xattr_search *s = &s_copy; struct mb_cache_entry *ce = NULL; int error = 0; struct mb_cache *ext4_mb_cache = EXT4_GET_MB_CACHE(inode); @@ -1517,6 +1513,11 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index, if (!bs.s.not_found && ext4_xattr_value_same(&bs.s, &i)) goto cleanup; + if (ext4_has_feature_ea_inode(inode->i_sb) && + (EXT4_XATTR_SIZE(i.value_len) > + EXT4_XATTR_MIN_LARGE_EA_SIZE(inode->i_sb->s_blocksize))) + i.in_inode = 1; +retry_inode: error = ext4_xattr_ibody_set(handle, inode, &i, &is); if (!error && !bs.s.not_found) { i.value = NULL; @@ -1528,20 +1529,20 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index, goto cleanup; } error = ext4_xattr_block_set(handle, inode, &i, &bs); - if (ext4_has_feature_ea_inode(inode->i_sb) && - error == -ENOSPC) { - /* xattr not fit to block, store at external - * inode */ - i.in_inode = 1; - error = ext4_xattr_ibody_set(handle, inode, - &i, &is); - } - if (error) - goto cleanup; - if (!is.s.not_found) { + if (!error && !is.s.not_found) { i.value = NULL; error = ext4_xattr_ibody_set(handle, inode, &i, &is); + } else if (error == -ENOSPC) { + /* + * Xattr does not fit in the block, store at + * external inode if possible. + */ + if (ext4_has_feature_ea_inode(inode->i_sb) && + !i.in_inode) { + i.in_inode = 1; + goto retry_inode; + } } } } -- cgit v1.2.3