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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2008-01-28 23:58:27 -0500
committerTheodore Ts'o <tytso@mit.edu>2008-01-28 23:58:27 -0500
commitc278bfecebfb1ed67c326ef472660878baa745cd (patch)
tree7207594cef5bd04ea7333a8321d78aefee01a540 /include
parent01f4adc04480a4e0395906d0268c056cf09c39c0 (diff)
ext4: Make ext4_get_blocks_wrap take the truncate_mutex early.
When doing a migrate from ext3 to ext4 inode we need to make sure the test for inode type and walking inode data happens inside lock. To make this happen move truncate_mutex early before checking the i_flags. This actually should enable us to remove the verify_chain(). Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/ext4_fs.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/ext4_fs.h b/include/linux/ext4_fs.h
index 55a376e7bca0..583049c1d366 100644
--- a/include/linux/ext4_fs.h
+++ b/include/linux/ext4_fs.h
@@ -1113,6 +1113,7 @@ ext4_get_blocks_wrap(handle_t *handle, struct inode *inode, sector_t block,
int create, int extend_disksize)
{
int retval;
+ mutex_lock(&EXT4_I(inode)->truncate_mutex);
if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL) {
retval = ext4_ext_get_blocks(handle, inode,
(ext4_lblk_t)block, max_blocks,
@@ -1122,6 +1123,7 @@ ext4_get_blocks_wrap(handle_t *handle, struct inode *inode, sector_t block,
(ext4_lblk_t)block, max_blocks,
bh, create, extend_disksize);
}
+ mutex_unlock(&EXT4_I(inode)->truncate_mutex);
return retval;
}