ext4: add new function ext4_block_zero_page_range()
authorAllison Henderson <achender@linux.vnet.ibm.com>
Wed, 25 May 2011 11:41:32 +0000 (07:41 -0400)
committerTheodore Ts'o <tytso@mit.edu>
Wed, 25 May 2011 11:41:32 +0000 (07:41 -0400)
commit308488518dfcbe3be250085cd582f5b0c1ce72a9
tree4696b50debf9794f2cbb966cccbedadb93dc996a
parent55f020db66ce187fb8c8e4002a94b0eb714da450
ext4: add new function ext4_block_zero_page_range()

This patch modifies the existing ext4_block_truncate_page() function
which was used by the truncate code path, and which zeroes out block
unaligned data, by adding a new length parameter, and renames it to
ext4_block_zero_page_rage().  This function can now be used to zero out the
head of a block, the tail of a block, or the middle
of a block.

The ext4_block_truncate_page() function is now a wrapper to
ext4_block_zero_page_range().

[ext4 punch hole patch series 2/5 v7]

Signed-off-by: Allison Henderson <achender@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Mingming Cao <cmm@us.ibm.com>
fs/ext4/ext4.h
fs/ext4/inode.c