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ext4: rename and improbe ext4_es_find_extent()

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This commit renames ext4_es_find_extent with ext4_es_find_delayed_extent
and improve this function.  First, we split input and output parameter.
Second, this function never return the first block of the next delayed
extent after 'es'.

Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: Jan kara <jack@suse.cz>
This commit is contained in:
Zheng Liu
2013-02-18 00:27:26 -05:00
committed by Theodore Ts'o
parent fdc0212e86
commit be401363ac
5 changed files with 40 additions and 40 deletions
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15
fs/ext4/extents.c
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@@ -3528,8 +3528,7 @@ static int ext4_find_delalloc_range(struct inode *inode,
{
struct extent_status es;
es.es_lblk = lblk_start;
(void)ext4_es_find_extent(inode, &es);
ext4_es_find_delayed_extent(inode, lblk_start, &es);
if (es.es_len == 0)
return 0; /* there is no delay extent in this tree */
else if (es.es_lblk <= lblk_start &&
@@ -4568,10 +4567,9 @@ static int ext4_find_delayed_extent(struct inode *inode,
struct ext4_ext_cache *newex)
{
struct extent_status es;
ext4_lblk_t next_del;
ext4_lblk_t block, next_del;
es.es_lblk = newex->ec_block;
next_del = ext4_es_find_extent(inode, &es);
ext4_es_find_delayed_extent(inode, newex->ec_block, &es);
if (newex->ec_start == 0) {
/*
@@ -4592,6 +4590,13 @@ static int ext4_find_delayed_extent(struct inode *inode,
newex->ec_len = es.es_lblk + es.es_len - newex->ec_block;
}
block = newex->ec_block + newex->ec_len;
ext4_es_find_delayed_extent(inode, block, &es);
if (es.es_len == 0)
next_del = EXT_MAX_BLOCKS;
else
next_del = es.es_lblk;
return next_del;
}
/* fiemap flags we can handle specified here */