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| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2011-04-30 18:56:12 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2011-05-10 22:21:45 +0900 |
| commit | 56eb55388580ebd51f3bbd9af40ebb56849356af (patch) | |
| tree | 7d1ed80fa05150c40a75d5755981c8d949ae634b /fs/nilfs2/segment.c | |
| parent | 6c6de1aa65189c37cc3c9af78da756c06a99899b (diff) | |
| download | kernel-common-56eb55388580ebd51f3bbd9af40ebb56849356af.tar.gz kernel-common-56eb55388580ebd51f3bbd9af40ebb56849356af.tar.bz2 kernel-common-56eb55388580ebd51f3bbd9af40ebb56849356af.zip | |
nilfs2: zero fill unused portion of super root block
The super root block is newly-allocated each time it is written back
to disk, so unused portion of the block should be cleared.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'fs/nilfs2/segment.c')
| -rw-r--r-- | fs/nilfs2/segment.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c index 8006d0cd4440..8a2b428b1838 100644 --- a/fs/nilfs2/segment.c +++ b/fs/nilfs2/segment.c @@ -889,12 +889,14 @@ static void nilfs_segctor_fill_in_super_root(struct nilfs_sc_info *sci, { struct buffer_head *bh_sr; struct nilfs_super_root *raw_sr; - unsigned isz = nilfs->ns_inode_size; + unsigned isz, srsz; bh_sr = NILFS_LAST_SEGBUF(&sci->sc_segbufs)->sb_super_root; raw_sr = (struct nilfs_super_root *)bh_sr->b_data; + isz = nilfs->ns_inode_size; + srsz = NILFS_SR_BYTES(isz); - raw_sr->sr_bytes = cpu_to_le16(NILFS_SR_BYTES(isz)); + raw_sr->sr_bytes = cpu_to_le16(srsz); raw_sr->sr_nongc_ctime = cpu_to_le64(nilfs_doing_gc() ? nilfs->ns_nongc_ctime : sci->sc_seg_ctime); @@ -906,6 +908,7 @@ static void nilfs_segctor_fill_in_super_root(struct nilfs_sc_info *sci, NILFS_SR_CPFILE_OFFSET(isz), 1); nilfs_write_inode_common(nilfs->ns_sufile, (void *)raw_sr + NILFS_SR_SUFILE_OFFSET(isz), 1); + memset((void *)raw_sr + srsz, 0, nilfs->ns_blocksize - srsz); } static void nilfs_redirty_inodes(struct list_head *head) |