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f2fs: refactor resize_fs to avoid meta updates in progress

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Sahitya raised an issue:
- prevent meta updates while checkpoint is in progress

allocate_segment_for_resize() can cause metapage updates if
it requires to change the current node/data segments for resizing.
Stop these meta updates when there is a checkpoint already
in progress to prevent inconsistent CP data.

Signed-off-by: Sahitya Tummala <stummala@codeaurora.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim
2020-03-31 11:43:07 -07:00
parent 4fec3fc026
commit b4b10061ef
6 changed files with 78 additions and 59 deletions
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5
fs/f2fs/file.c
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@@ -3312,7 +3312,6 @@ static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
{
struct f2fs_sb_info *sbi = F2FS_I_SB(file_inode(filp));
__u64 block_count;
int ret;
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
@@ -3324,9 +3323,7 @@ static int f2fs_ioc_resize_fs(struct file *filp, unsigned long arg)
sizeof(block_count)))
return -EFAULT;
ret = f2fs_resize_fs(sbi, block_count);
return ret;
return f2fs_resize_fs(sbi, block_count);
}
static int f2fs_ioc_enable_verity(struct file *filp, unsigned long arg)