[PATCH v2 2/2] ext4: mark fc as ineligible using an handle in ext4_xattr_set()
From: Luis Henriques (SUSE)
Date: Mon Sep 23 2024 - 06:50:03 EST
Calling ext4_fc_mark_ineligible() with a NULL handle is racy and may result
in a fast-commit being done before the filesystem is effectively marked as
ineligible. This patch moves the call to this function so that an handle
can be used. If a transaction fails to start, then there's not point in
trying to mark the filesystem as ineligible, and an error will eventually be
returned to user-space.
Suggested-by: Jan Kara <jack@xxxxxxx>
Signed-off-by: Luis Henriques (SUSE) <luis.henriques@xxxxxxxxx>
---
fs/ext4/xattr.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index 46ce2f21fef9..aea9e3c405f1 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -2559,6 +2559,8 @@ ext4_xattr_set(struct inode *inode, int name_index, const char *name,
error = ext4_xattr_set_handle(handle, inode, name_index, name,
value, value_len, flags);
+ ext4_fc_mark_ineligible(inode->i_sb, EXT4_FC_REASON_XATTR,
+ handle);
error2 = ext4_journal_stop(handle);
if (error == -ENOSPC &&
ext4_should_retry_alloc(sb, &retries))
@@ -2566,7 +2568,6 @@ ext4_xattr_set(struct inode *inode, int name_index, const char *name,
if (error == 0)
error = error2;
}
- ext4_fc_mark_ineligible(inode->i_sb, EXT4_FC_REASON_XATTR, NULL);
return error;
}