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ext4: Do not clear zalloc'ed buffers a second time

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zero_buffer is never written, thus clearing it is pointless.
journal_buffer is completely initialized by ext4fs_devread (or in case
of failure, not used).

Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
This commit is contained in:
Stefan Brüns 2016-09-06 04:36:48 +02:00 committed by Tom Rini
parent 398d6fad92
commit e927265225
1 changed files with 0 additions and 3 deletions
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3
fs/ext4/ext4_common.c
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@ -929,7 +929,6 @@ restart:
if (le16_to_cpu(bgd[bg_idx].bg_flags) & EXT4_BG_BLOCK_UNINIT) {
uint16_t new_flags;
memset(zero_buffer, '\0', fs->blksz);
put_ext4((uint64_t)le32_to_cpu(bgd[bg_idx].block_id) * fs->blksz,
zero_buffer, fs->blksz);
memcpy(fs->blk_bmaps[bg_idx], zero_buffer, fs->blksz);
@ -946,7 +945,6 @@ restart:
/* journal backup */
if (prev_bg_bitmap_index != bg_idx) {
memset(journal_buffer, '\0', fs->blksz);
status = ext4fs_devread(
(lbaint_t)le32_to_cpu(bgd[bg_idx].block_id)
* fs->sect_perblk,
@ -1040,7 +1038,6 @@ restart:
ibmap_idx = fs->curr_inode_no / inodes_per_grp;
if (le16_to_cpu(bgd[ibmap_idx].bg_flags) & EXT4_BG_INODE_UNINIT) {
int new_flags;
memset(zero_buffer, '\0', fs->blksz);
put_ext4((uint64_t)le32_to_cpu(bgd[ibmap_idx].inode_id) * fs->blksz,
zero_buffer, fs->blksz);
new_flags = le16_to_cpu(bgd[ibmap_idx].bg_flags) & ~EXT4_BG_INODE_UNINIT;