From: Yongqiang Yang <xiaoqiangnk@gmail.com>
To: linux-ext4@vger.kernel.org
Cc: aedilger@gmail.com, Yongqiang Yang <xiaoqiangnk@gmail.com>
Subject: [PATCH 06/12] ext4: let ext4_group_add_blocks() handle 0 blocks quickly
Date: Mon, 18 Jul 2011 10:52:29 +0800 [thread overview]
Message-ID: <1310957555-15617-7-git-send-email-xiaoqiangnk@gmail.com> (raw)
In-Reply-To: <1310957555-15617-1-git-send-email-xiaoqiangnk@gmail.com>
If ext4_group_add_blocks() is called with 0 block, it just return 0.
Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
---
fs/ext4/mballoc.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 33c41e6..a2af35b 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4680,6 +4680,9 @@ int ext4_group_add_blocks(handle_t *handle, struct super_block *sb,
ext4_debug("Adding block(s) %llu-%llu\n", block, block + count - 1);
+ if (count == 0)
+ return 0;
+
ext4_get_group_no_and_offset(sb, block, &block_group, &bit);
/*
* Check to see if we are freeing blocks across a group
--
1.7.5.1
next prev parent reply other threads:[~2011-07-18 2:56 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-18 2:52 prevent parallel resizers and fix some error handling in resize Yongqiang Yang
2011-07-18 2:52 ` [PATCH 01/12] ext4: prevent parallel resizers by atomic bit ops Yongqiang Yang
2011-07-18 2:52 ` [PATCH 02/12] ext4: prevent a fs with errors from being resized Yongqiang Yang
2011-07-18 2:52 ` [PATCH 03/12] ext4: prevent a fs without journal " Yongqiang Yang
2011-07-18 3:17 ` Tao Ma
2011-07-18 3:28 ` Yongqiang Yang
2011-07-18 3:44 ` Yongqiang Yang
2011-07-18 7:00 ` Andreas Dilger
2011-07-18 2:52 ` [PATCH 04/12] ext4: rename ext4_add_groupblocks() to ext4_group_add_blocks() Yongqiang Yang
2011-07-18 6:32 ` Amir Goldstein
2011-07-18 10:15 ` Yongqiang Yang
2011-07-18 2:52 ` [PATCH 05/12] ext4: let ext4_group_add_blocks return an error code Yongqiang Yang
2011-07-18 6:19 ` Andreas Dilger
2011-07-18 6:47 ` Amir Goldstein
2011-07-18 6:48 ` Amir Goldstein
2011-07-18 12:55 ` Yongqiang Yang
2011-07-18 2:52 ` Yongqiang Yang [this message]
2011-07-18 2:52 ` [PATCH 07/12] ext4: fix a typo in ext4_group_extend() Yongqiang Yang
2011-07-18 2:52 ` [PATCH 08/12] ext4: let setup_new_group_blocks set multi-bits each time Yongqiang Yang
2011-07-18 6:26 ` Andreas Dilger
2011-07-18 6:56 ` Amir Goldstein
2011-07-18 2:52 ` [PATCH 09/12] ext4: simplify journal handling in ext4_setup_new_group_blocks Yongqiang Yang
2011-07-18 3:09 ` Tao Ma
2011-07-18 3:21 ` Yongqiang Yang
2011-07-18 3:40 ` Tao Ma
2011-07-18 3:46 ` Yongqiang Yang
2011-07-18 2:52 ` [PATCH 10/12] ext4: remove lock_buffer in bclean() and setup_new_group_blocks Yongqiang Yang
2011-07-18 2:52 ` [PATCH 11/12] ext4: simplify parameters of add_new_gdb() Yongqiang Yang
2011-07-18 6:46 ` Andreas Dilger
2011-07-18 2:52 ` [PATCH 12/12] ext4: simplify parameters of reserve_backup_gdb() Yongqiang Yang
2011-07-18 7:12 ` Amir Goldstein
2011-07-18 6:16 ` prevent parallel resizers and fix some error handling in resize Amir Goldstein
2011-07-18 10:16 ` Yongqiang Yang
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