diff mbox series

[v2,09/12] ext4: add xattr block I/O fault injection

Message ID 20221110022558.7844-10-yi.zhang@huawei.com
State New
Headers show
Series ext4: enhance simulate fail facility | expand

Commit Message

Zhang Yi Nov. 10, 2022, 2:25 a.m. UTC 
Add I/O fault injection when reading xattr block, we can specify the
inode to inject. ext4_xattr_get_block() will return -EIO immediately
instead of submitting I/O.

Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
---
 fs/ext4/ext4.h  | 2 ++
 fs/ext4/sysfs.c | 1 +
 fs/ext4/xattr.c | 4 ++++
 3 files changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index aaa3a29cd0e7..94894daef595 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1524,6 +1524,7 @@  enum ext4_fault_bits {
 	EXT4_FAULT_INODE_EIO,		/* inode */
 	EXT4_FAULT_EXTENT_EIO,		/* extent block */
 	EXT4_FAULT_DIRBLOCK_EIO,	/* directory block */
+	EXT4_FAULT_XATTR_EIO,		/* xattr block */
 	EXT4_FAULT_MAX
 };
 
@@ -1628,6 +1629,7 @@  EXT4_FAULT_GRP_FN(BBITMAP_EIO, block_bitmap_io, -EIO)
 EXT4_FAULT_INODE_FN(INODE_EIO, inode_io, -EIO)
 EXT4_FAULT_INODE_PBLOCK_FN(EXTENT_EIO, extent_io, -EIO)
 EXT4_FAULT_INODE_LBLOCK_FN(DIRBLOCK_EIO, dirblock_io, -EIO)
+EXT4_FAULT_INODE_FN(XATTR_EIO, xattr_io, -EIO)
 
 /*
  * fourth extended-fs super-block data in memory
diff --git a/fs/ext4/sysfs.c b/fs/ext4/sysfs.c
index 82178c9eb5b6..842e4f60fb69 100644
--- a/fs/ext4/sysfs.c
+++ b/fs/ext4/sysfs.c
@@ -583,6 +583,7 @@  char *ext4_fault_names[EXT4_FAULT_MAX] = {
 	"inode_eio",			/* EXT4_FAULT_INODE_EIO */
 	"extent_block_eio",		/* EXT4_FAULT_EXTENT_EIO */
 	"dir_block_eio",		/* EXT4_FAULT_DIRBLOCK_EIO */
+	"xattr_block_eio",		/* EXT4_FAULT_XATTR_EIO */
 };
 
 static int ext4_fault_available_show(struct seq_file *m, void *v)
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 39c80565c65d..3a066c1ddd5c 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -2231,6 +2231,10 @@  static struct buffer_head *ext4_xattr_get_block(struct inode *inode)
 	if (!EXT4_I(inode)->i_file_acl)
 		return NULL;
 
+	error = ext4_fault_xattr_io(inode->i_sb, inode->i_ino);
+	if (error)
+		return ERR_PTR(error);
+
 	ea_idebug(inode, "reading block %llu",
 		  (unsigned long long)EXT4_I(inode)->i_file_acl);
 	bh = ext4_sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl, REQ_PRIO);