From: "Darrick J. Wong" <djwong@xxxxxxxxxx>
Make it so that we can adjust the forcealign flag at runtime.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
Co-developed-by: John Garry <john.g.garry@xxxxxxxxxx>
Signed-off-by: John Garry <john.g.garry@xxxxxxxxxx>
---
io/attr.c | 5 ++++-
man/man2/ioctl_xfs_fsgetxattr.2 | 6 ++++++
2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/io/attr.c b/io/attr.c
index fd82a2e73801..248a9c28eae1 100644
--- a/io/attr.c
+++ b/io/attr.c
@@ -38,9 +38,10 @@ static struct xflags {
{ FS_XFLAG_DAX, "x", "dax" },
{ FS_XFLAG_COWEXTSIZE, "C", "cowextsize" },
{ FS_XFLAG_HASATTR, "X", "has-xattr" },
+ { FS_XFLAG_FORCEALIGN, "F", "force-align" },
{ 0, NULL, NULL }
};
-#define CHATTR_XFLAG_LIST "r"/*p*/"iasAdtPneEfSxC"/*X*/
+#define CHATTR_XFLAG_LIST "r"/*p*/"iasAdtPneEfSxC"/*X*/"F"
static void
lsattr_help(void)
@@ -67,6 +68,7 @@ lsattr_help(void)
" x -- Use direct access (DAX) for data in this file\n"
" C -- for files with shared blocks, observe the inode CoW extent size value\n"
" X -- file has extended attributes (cannot be changed using chattr)\n"
+" F -- data extent mappings must be aligned to extent size hint\n"
"\n"
" Options:\n"
" -R -- recursively descend (useful when current file is a directory)\n"
@@ -104,6 +106,7 @@ chattr_help(void)
" +/-S -- set/clear the filestreams allocator flag\n"
" +/-x -- set/clear the direct access (DAX) flag\n"
" +/-C -- set/clear the CoW extent-size flag\n"
+" +/-F -- set/clear the forcealign flag\n"
" Note1: user must have certain capabilities to modify immutable/append-only.\n"
" Note2: immutable/append-only files cannot be deleted; removing these files\n"
" requires the immutable/append-only flag to be cleared first.\n"
diff --git a/man/man2/ioctl_xfs_fsgetxattr.2 b/man/man2/ioctl_xfs_fsgetxattr.2
index 2c626a7e3742..d97fb1b508aa 100644
--- a/man/man2/ioctl_xfs_fsgetxattr.2
+++ b/man/man2/ioctl_xfs_fsgetxattr.2
@@ -200,6 +200,12 @@ below).
If set on a directory, new files and subdirectories created in the directory
will have both the flag and the CoW extent size value set.
.TP
+.B XFS_XFLAG_FORCEALIGN
+Force Alignment bit - requires that all file data extents must be aligned
+to the extent size hint value.
+If set on a directory, new files and subdirectories created in the directory
+will have the flag set.
+.TP
.B XFS_XFLAG_HASATTR
The file has extended attributes associated with it.
--
2.34.1
