diff options
Diffstat (limited to 'fs/ufs/balloc.c')
| -rw-r--r-- | fs/ufs/balloc.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/fs/ufs/balloc.c b/fs/ufs/balloc.c index b82381475779..2e0021e8f366 100644 --- a/fs/ufs/balloc.c +++ b/fs/ufs/balloc.c @@ -275,6 +275,25 @@ static void ufs_change_blocknr(struct inode *inode, unsigned int baseblk, UFSD("EXIT\n"); } +static void ufs_clear_frags(struct inode *inode, sector_t beg, unsigned int n, + int sync) +{ + struct buffer_head *bh; + sector_t end = beg + n; + + for (; beg < end; ++beg) { + bh = sb_getblk(inode->i_sb, beg); + lock_buffer(bh); + memset(bh->b_data, 0, inode->i_sb->s_blocksize); + set_buffer_uptodate(bh); + mark_buffer_dirty(bh); + unlock_buffer(bh); + if (IS_SYNC(inode) || sync) + sync_dirty_buffer(bh); + brelse(bh); + } +} + unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment, unsigned goal, unsigned count, int * err, struct page *locked_page) { @@ -350,6 +369,8 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment, *p = cpu_to_fs32(sb, result); *err = 0; UFS_I(inode)->i_lastfrag = max_t(u32, UFS_I(inode)->i_lastfrag, fragment + count); + ufs_clear_frags(inode, result + oldcount, newcount - oldcount, + locked_page != NULL); } unlock_super(sb); UFSD("EXIT, result %u\n", result); @@ -363,6 +384,8 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment, if (result) { *err = 0; UFS_I(inode)->i_lastfrag = max_t(u32, UFS_I(inode)->i_lastfrag, fragment + count); + ufs_clear_frags(inode, result + oldcount, newcount - oldcount, + locked_page != NULL); unlock_super(sb); UFSD("EXIT, result %u\n", result); return result; @@ -398,6 +421,8 @@ unsigned ufs_new_fragments(struct inode * inode, __fs32 * p, unsigned fragment, *p = cpu_to_fs32(sb, result); *err = 0; UFS_I(inode)->i_lastfrag = max_t(u32, UFS_I(inode)->i_lastfrag, fragment + count); + ufs_clear_frags(inode, result + oldcount, newcount - oldcount, + locked_page != NULL); unlock_super(sb); if (newcount < request) ufs_free_fragments (inode, result + newcount, request - newcount); |