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xfs: clean up FS_XFLAG_REALTIME handling in xfs_ioctl_setattr_xflags

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Introduce a local boolean variable if FS_XFLAG_REALTIME to make the
checks for it more obvious, and de-densify a few of the conditionals
using it to make them more readable while at it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20231025141020.192413-4-hch@lst.de
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Christoph Hellwig 2023-10-25 16:10:19 +02:00 committed by Christian Brauner
parent 1898efcdbe
commit c421df0b19
1 changed files with 14 additions and 12 deletions
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26
fs/xfs/xfs_ioctl.c
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@ -1121,23 +1121,25 @@ xfs_ioctl_setattr_xflags(
struct fileattr *fa)
{
struct xfs_mount *mp = ip->i_mount;
bool rtflag = (fa->fsx_xflags & FS_XFLAG_REALTIME);
uint64_t i_flags2;
/* Can't change realtime flag if any extents are allocated. */
if ((ip->i_df.if_nextents || ip->i_delayed_blks) &&
XFS_IS_REALTIME_INODE(ip) != (fa->fsx_xflags & FS_XFLAG_REALTIME))
return -EINVAL;
/* If realtime flag is set then must have realtime device */
if (fa->fsx_xflags & FS_XFLAG_REALTIME) {
if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 ||
xfs_extlen_to_rtxmod(mp, ip->i_extsize))
if (rtflag != XFS_IS_REALTIME_INODE(ip)) {
/* Can't change realtime flag if any extents are allocated. */
if (ip->i_df.if_nextents || ip->i_delayed_blks)
return -EINVAL;
}
/* Clear reflink if we are actually able to set the rt flag. */
if ((fa->fsx_xflags & FS_XFLAG_REALTIME) && xfs_is_reflink_inode(ip))
ip->i_diflags2 &= ~XFS_DIFLAG2_REFLINK;
if (rtflag) {
/* If realtime flag is set then must have realtime device */
if (mp->m_sb.sb_rblocks == 0 || mp->m_sb.sb_rextsize == 0 ||
xfs_extlen_to_rtxmod(mp, ip->i_extsize))
return -EINVAL;
/* Clear reflink if we are actually able to set the rt flag. */
if (xfs_is_reflink_inode(ip))
ip->i_diflags2 &= ~XFS_DIFLAG2_REFLINK;
}
/* diflags2 only valid for v3 inodes. */
i_flags2 = xfs_flags2diflags2(ip, fa->fsx_xflags);