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path: root/fs/xfs/xfs_iops.c
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Diffstat (limited to 'fs/xfs/xfs_iops.c')
-rw-r--r--fs/xfs/xfs_iops.c79
1 files changed, 49 insertions, 30 deletions
diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index f7a99b3bbcf7..d66528fa3657 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -738,12 +738,7 @@ xfs_setattr_nonsize(
if (error) /* out of quota */
goto out_cancel;
}
- }
- /*
- * Change file ownership. Must be the owner or privileged.
- */
- if (mask & (ATTR_UID|ATTR_GID)) {
/*
* CAP_FSETID overrides the following restrictions:
*
@@ -877,7 +872,7 @@ xfs_setattr_size(
/*
* Short circuit the truncate case for zero length files.
*/
- if (newsize == 0 && oldsize == 0 && ip->i_d.di_nextents == 0) {
+ if (newsize == 0 && oldsize == 0 && ip->i_df.if_nextents == 0) {
if (!(iattr->ia_valid & (ATTR_CTIME|ATTR_MTIME)))
return 0;
@@ -1243,13 +1238,12 @@ xfs_inode_supports_dax(
{
struct xfs_mount *mp = ip->i_mount;
- /* Only supported on non-reflinked files. */
- if (!S_ISREG(VFS_I(ip)->i_mode) || xfs_is_reflink_inode(ip))
+ /* Only supported on regular files. */
+ if (!S_ISREG(VFS_I(ip)->i_mode))
return false;
- /* DAX mount option or DAX iflag must be set. */
- if (!(mp->m_flags & XFS_MOUNT_DAX) &&
- !(ip->i_d.di_flags2 & XFS_DIFLAG2_DAX))
+ /* Only supported on non-reflinked files. */
+ if (xfs_is_reflink_inode(ip))
return false;
/* Block size must match page size */
@@ -1260,26 +1254,51 @@ xfs_inode_supports_dax(
return xfs_inode_buftarg(ip)->bt_daxdev != NULL;
}
-STATIC void
+static bool
+xfs_inode_should_enable_dax(
+ struct xfs_inode *ip)
+{
+ if (!IS_ENABLED(CONFIG_FS_DAX))
+ return false;
+ if (ip->i_mount->m_flags & XFS_MOUNT_DAX_NEVER)
+ return false;
+ if (!xfs_inode_supports_dax(ip))
+ return false;
+ if (ip->i_mount->m_flags & XFS_MOUNT_DAX_ALWAYS)
+ return true;
+ if (ip->i_d.di_flags2 & XFS_DIFLAG2_DAX)
+ return true;
+ return false;
+}
+
+void
xfs_diflags_to_iflags(
- struct inode *inode,
- struct xfs_inode *ip)
+ struct xfs_inode *ip,
+ bool init)
{
- uint16_t flags = ip->i_d.di_flags;
-
- inode->i_flags &= ~(S_IMMUTABLE | S_APPEND | S_SYNC |
- S_NOATIME | S_DAX);
-
- if (flags & XFS_DIFLAG_IMMUTABLE)
- inode->i_flags |= S_IMMUTABLE;
- if (flags & XFS_DIFLAG_APPEND)
- inode->i_flags |= S_APPEND;
- if (flags & XFS_DIFLAG_SYNC)
- inode->i_flags |= S_SYNC;
- if (flags & XFS_DIFLAG_NOATIME)
- inode->i_flags |= S_NOATIME;
- if (xfs_inode_supports_dax(ip))
- inode->i_flags |= S_DAX;
+ struct inode *inode = VFS_I(ip);
+ unsigned int xflags = xfs_ip2xflags(ip);
+ unsigned int flags = 0;
+
+ ASSERT(!(IS_DAX(inode) && init));
+
+ if (xflags & FS_XFLAG_IMMUTABLE)
+ flags |= S_IMMUTABLE;
+ if (xflags & FS_XFLAG_APPEND)
+ flags |= S_APPEND;
+ if (xflags & FS_XFLAG_SYNC)
+ flags |= S_SYNC;
+ if (xflags & FS_XFLAG_NOATIME)
+ flags |= S_NOATIME;
+ if (init && xfs_inode_should_enable_dax(ip))
+ flags |= S_DAX;
+
+ /*
+ * S_DAX can only be set during inode initialization and is never set by
+ * the VFS, so we cannot mask off S_DAX in i_flags.
+ */
+ inode->i_flags &= ~(S_IMMUTABLE | S_APPEND | S_SYNC | S_NOATIME);
+ inode->i_flags |= flags;
}
/*
@@ -1305,7 +1324,7 @@ xfs_setup_inode(
inode_fake_hash(inode);
i_size_write(inode, ip->i_d.di_size);
- xfs_diflags_to_iflags(inode, ip);
+ xfs_diflags_to_iflags(ip, true);
if (S_ISDIR(inode->i_mode)) {
/*