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authorAndreas Dilger <andreas.dilger@intel.com>2017-06-22 04:10:32 +0300
committerTheodore Ts'o <tytso@mit.edu>2017-06-22 04:10:32 +0300
commite50e5129f384ae282adebfb561189cdb19b81cee (patch)
treed386e2df251f3faa23af1236f8c129bb6ea25b9d /fs/ext4/ialloc.c
parente08ac99fa2a25626f573cfa377ef3ddedf2cfe8f (diff)
downloadlinux-e50e5129f384ae282adebfb561189cdb19b81cee.tar.xz
ext4: xattr-in-inode support
Large xattr support is implemented for EXT4_FEATURE_INCOMPAT_EA_INODE. If the size of an xattr value is larger than will fit in a single external block, then the xattr value will be saved into the body of an external xattr inode. The also helps support a larger number of xattr, since only the headers will be stored in the in-inode space or the single external block. The inode is referenced from the xattr header via "e_value_inum", which was formerly "e_value_block", but that field was never used. The e_value_size still contains the xattr size so that listing xattrs does not need to look up the inode if the data is not accessed. struct ext4_xattr_entry { __u8 e_name_len; /* length of name */ __u8 e_name_index; /* attribute name index */ __le16 e_value_offs; /* offset in disk block of value */ __le32 e_value_inum; /* inode in which value is stored */ __le32 e_value_size; /* size of attribute value */ __le32 e_hash; /* hash value of name and value */ char e_name[0]; /* attribute name */ }; The xattr inode is marked with the EXT4_EA_INODE_FL flag and also holds a back-reference to the owning inode in its i_mtime field, allowing the ext4/e2fsck to verify the correct inode is accessed. [ Applied fix by Dan Carpenter to avoid freeing an ERR_PTR. ] Lustre-Jira: https://jira.hpdd.intel.com/browse/LU-80 Lustre-bugzilla: https://bugzilla.lustre.org/show_bug.cgi?id=4424 Signed-off-by: Kalpak Shah <kalpak.shah@sun.com> Signed-off-by: James Simmons <uja.ornl@gmail.com> Signed-off-by: Andreas Dilger <andreas.dilger@intel.com> Signed-off-by: Tahsin Erdogan <tahsin@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Diffstat (limited to 'fs/ext4/ialloc.c')
-rw-r--r--fs/ext4/ialloc.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 98ac2f1f23b3..e2eb3cc06820 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -294,7 +294,6 @@ void ext4_free_inode(handle_t *handle, struct inode *inode)
* as writing the quota to disk may need the lock as well.
*/
dquot_initialize(inode);
- ext4_xattr_delete_inode(handle, inode);
dquot_free_inode(inode);
dquot_drop(inode);