From 07031431072ece801d53d2c03d5e5bb21f4f64a4 Mon Sep 17 00:00:00 2001 From: Mingming Cao Date: Fri, 11 Jul 2008 19:27:31 -0400 Subject: ext4: mballoc avoid use root reserved blocks for non root allocation mballoc allocation missed check for blocks reserved for root users. Add ext4_has_free_blocks() check before allocation. Also modified ext4_has_free_blocks() to support multiple block allocation request. Signed-off-by: Mingming Cao Signed-off-by: "Theodore Ts'o" --- fs/ext4/mballoc.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'fs/ext4/mballoc.c') diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 816ba8cce79..1666ac184e3 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -4045,6 +4045,12 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle, &(ar->len), errp); return block; } + ar->len = ext4_has_free_blocks(sbi, ar->len); + + if (ar->len == 0) { + *errp = -ENOSPC; + return 0; + } while (ar->len && DQUOT_ALLOC_BLOCK(ar->inode, ar->len)) { ar->flags |= EXT4_MB_HINT_NOPREALLOC; @@ -4073,7 +4079,6 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle, ac->ac_op = EXT4_MB_HISTORY_PREALLOC; if (!ext4_mb_use_preallocated(ac)) { - ac->ac_op = EXT4_MB_HISTORY_ALLOC; ext4_mb_normalize_request(ac, ar); repeat: -- cgit v1.2.3