[PATCH -next v3 3/5] ext4: get buffer head before read_mmp_block
From: Ye Bin <hidden>
Date: 2021-10-19 06:37:46
Also in:
lkml
Subsystem:
ext4 file system, filesystems (vfs and infrastructure), the rest · Maintainers:
"Theodore Ts'o", Alexander Viro, Christian Brauner, Linus Torvalds
There is only pass NULL 'bh' in ext4_multi_mount_protect, So just call sb_getblk get buffer head fisrt, and we will simplify read_mmp_block function. Signed-off-by: Ye Bin <redacted> --- fs/ext4/mmp.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c
index 4af8b99ade84..6ac6aacd8fa5 100644
--- a/fs/ext4/mmp.c
+++ b/fs/ext4/mmp.c@@ -295,6 +295,10 @@ int ext4_multi_mount_protect(struct super_block *sb, goto failed; } + bh = sb_getblk(sb, mmp_block); + if (bh) + goto failed; + retval = read_mmp_block(sb, &bh, mmp_block); if (retval) goto failed;
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2.31.1