[PATCH][next][V2] hfsplus: remove dev_err messages and fix errno values

[PATCH][next][V2] hfsplus: remove dev_err messages and fix errno values

[Colin Ian King]

While exercising hfsplus with stress-ng with xattr tests the kernel
log was spammed with many error messages. The need to emit these
messages is not necessary, so remove them. Also fix the errno returns,
for XATTR_CREATE errors these should be -EEXIST, and for XATTR_REPLACE
this should be -ENODATA.

Kudos to Matthew Wilcox for spotting the need for -EEXIST instead of
-EOPNOTSUPP.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
---

V2: Also remove "cannot replace xattr" message and fix the errno returns

---
 fs/hfsplus/xattr.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/fs/hfsplus/xattr.c b/fs/hfsplus/xattr.c
index 9c9ff6b8c6f7..f61a9370a233 100644
--- a/fs/hfsplus/xattr.c
+++ b/fs/hfsplus/xattr.c
@@ -288,8 +288,7 @@ int __hfsplus_setxattr(struct inode *inode, const char *name,
 
 	if (!strcmp_xattr_finder_info(name)) {
 		if (flags & XATTR_CREATE) {
-			pr_err("xattr exists yet\n");
-			err = -EOPNOTSUPP;
+			err = -EEXIST;
 			goto end_setxattr;
 		}
 		hfs_bnode_read(cat_fd.bnode, &entry, cat_fd.entryoffset,
@@ -335,8 +334,7 @@ int __hfsplus_setxattr(struct inode *inode, const char *name,
 
 	if (hfsplus_attr_exists(inode, name)) {
 		if (flags & XATTR_CREATE) {
-			pr_err("xattr exists yet\n");
-			err = -EOPNOTSUPP;
+			err = -EEXIST;
 			goto end_setxattr;
 		}
 		err = hfsplus_delete_attr(inode, name);
@@ -347,8 +345,7 @@ int __hfsplus_setxattr(struct inode *inode, const char *name,
 			goto end_setxattr;
 	} else {
 		if (flags & XATTR_REPLACE) {
-			pr_err("cannot replace xattr\n");
-			err = -EOPNOTSUPP;
+			err = -ENODATA;
 			goto end_setxattr;
 		}
 		err = hfsplus_create_attr(inode, name, value, size);
-- 
2.39.2

Re: [PATCH][next][V2] hfsplus: remove dev_err messages and fix errno values

[Christian Brauner]

On Thu, 07 Mar 2024 09:20:09 +0000, Colin Ian King wrote:
> While exercising hfsplus with stress-ng with xattr tests the kernel
> log was spammed with many error messages. The need to emit these
> messages is not necessary, so remove them. Also fix the errno returns,
> for XATTR_CREATE errors these should be -EEXIST, and for XATTR_REPLACE
> this should be -ENODATA.
> 
> Kudos to Matthew Wilcox for spotting the need for -EEXIST instead of
> -EOPNOTSUPP.
> 
> [...]

Applied to the vfs.misc branch of the vfs/vfs.git tree.
Patches in the vfs.misc branch should appear in linux-next soon.

Please report any outstanding bugs that were missed during review in a
new review to the original patch series allowing us to drop it.

It's encouraged to provide Acked-bys and Reviewed-bys even though the
patch has now been applied. If possible patch trailers will be updated.

Note that commit hashes shown below are subject to change due to rebase,
trailer updates or similar. If in doubt, please check the listed branch.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git
branch: vfs.misc

[1/1] hfsplus: remove dev_err messages and fix errno values
      https://git.kernel.org/vfs/vfs/c/41983afe811a