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ext4: remove unneeded test in ext4_alloc_file_blocks()

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ext4_alloc_file_blocks() is called from ext4_zero_range() and
ext4_fallocate() both already testing EXT4_INODE_EXTENTS
We can call ext_depth(inode) unconditionnally.

[ Added BUG_ON check to make sure ext4_alloc_file_blocks() won't get
  called for a indirect-mapped inode in the future.  -- tytso ]

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Fabian Frederick 2016-09-15 11:52:07 -04:00 • committed by Theodore Ts'o
parent edf15aa180
commit c3fe493ccd
1 changed files with 2 additions and 7 deletions
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7
fs/ext4/extents.c
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@ -4679,6 +4679,7 @@ static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset,
unsigned int credits; unsigned int credits;
loff_t epos; loff_t epos;
BUG_ON(!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS));
map.m_lblk = offset; map.m_lblk = offset;
map.m_len = len; map.m_len = len;
/* /*
@ -4693,13 +4694,7 @@ static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset,
* credits to insert 1 extent into extent tree * credits to insert 1 extent into extent tree
*/ */
credits = ext4_chunk_trans_blocks(inode, len); credits = ext4_chunk_trans_blocks(inode, len);
/*
* We can only call ext_depth() on extent based inodes
*/
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
depth = ext_depth(inode); depth = ext_depth(inode);
else
depth = -1;
retry: retry:
while (ret >= 0 && len) { while (ret >= 0 && len) {