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erofs: add sysfs feature entry for xattr prefixes

PATCH Superseded Jingbo Xu 2 participants 2 messages Sep 1

Subsystems (2)
Stable branch EROFS file system

v2 of 3 Superseded Latest is v3 →

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Jingbo Xu

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PATCH v2 1/1 erofs: add sysfs feature entry for xattr prefixes

Let /sys/fs/erofs/features/xattr_prefixes advertise that this kernel supports the EROFS_FEATURE_INCOMPAT_XATTR_PREFIXES on-disk format.

Fixes 6a318ccd7e08 ("erofs: enable long extended attribute name prefixes")
Cc <[email protected]> # 6.4+
Signed-off-by Jingbo Xu <[email protected]>

---
changes since v1:
- add Fixes tag and versioned Cc-stable tag

---
 fs/erofs/sysfs.c | 2 ++
 1 file changed, 2 insertions(+)
fs/erofs/sysfs.c +2 -0
index 6734483a440f..dfcec9376cd5 100644
@@ -95,6 +95,7 @@ EROFS_ATTR_FEATURE(sb_chksum);
 EROFS_ATTR_FEATURE(ztailpacking);
 EROFS_ATTR_FEATURE(fragments);
 EROFS_ATTR_FEATURE(dedupe);
+EROFS_ATTR_FEATURE(xattr_prefixes);
 EROFS_ATTR_FEATURE(48bit);
 EROFS_ATTR_FEATURE(metabox);
 

@@ -108,6 +109,7 @@ static struct attribute *erofs_feat_attrs[] = {
 	ATTR_LIST(ztailpacking),
 	ATTR_LIST(fragments),
 	ATTR_LIST(dedupe),
+	ATTR_LIST(xattr_prefixes),
 	ATTR_LIST(48bit),
 	ATTR_LIST(metabox),
 	NULL,
Signature · 1 line
2.19.1.6.gb485710b