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xfs: remove xfs_mod_incore_sb API
Now that there are no users of the bitfield based incore superblock modification API, just remove the whole damn lot of it, including all the bitfield definitions. This finally removes a lot of cruft that has been around for a long time. Credit goes to Christoph Hellwig for providing a great patch connecting all the dots to enale us to do this. This patch is derived from that work. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
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Dave Chinner
Dave Chinner
parent
0bd5ddedcc
commit
964aa8d9e4
@ -264,68 +264,6 @@ typedef struct xfs_dsb {
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/* must be padded to 64 bit alignment */
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} xfs_dsb_t;
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/*
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* Sequence number values for the fields.
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*/
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typedef enum {
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XFS_SBS_MAGICNUM, XFS_SBS_BLOCKSIZE, XFS_SBS_DBLOCKS, XFS_SBS_RBLOCKS,
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XFS_SBS_REXTENTS, XFS_SBS_UUID, XFS_SBS_LOGSTART, XFS_SBS_ROOTINO,
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XFS_SBS_RBMINO, XFS_SBS_RSUMINO, XFS_SBS_REXTSIZE, XFS_SBS_AGBLOCKS,
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XFS_SBS_AGCOUNT, XFS_SBS_RBMBLOCKS, XFS_SBS_LOGBLOCKS,
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XFS_SBS_VERSIONNUM, XFS_SBS_SECTSIZE, XFS_SBS_INODESIZE,
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XFS_SBS_INOPBLOCK, XFS_SBS_FNAME, XFS_SBS_BLOCKLOG,
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XFS_SBS_SECTLOG, XFS_SBS_INODELOG, XFS_SBS_INOPBLOG, XFS_SBS_AGBLKLOG,
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XFS_SBS_REXTSLOG, XFS_SBS_INPROGRESS, XFS_SBS_IMAX_PCT, XFS_SBS_ICOUNT,
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XFS_SBS_IFREE, XFS_SBS_FDBLOCKS, XFS_SBS_FREXTENTS, XFS_SBS_UQUOTINO,
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XFS_SBS_GQUOTINO, XFS_SBS_QFLAGS, XFS_SBS_FLAGS, XFS_SBS_SHARED_VN,
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XFS_SBS_INOALIGNMT, XFS_SBS_UNIT, XFS_SBS_WIDTH, XFS_SBS_DIRBLKLOG,
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XFS_SBS_LOGSECTLOG, XFS_SBS_LOGSECTSIZE, XFS_SBS_LOGSUNIT,
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XFS_SBS_FEATURES2, XFS_SBS_BAD_FEATURES2, XFS_SBS_FEATURES_COMPAT,
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XFS_SBS_FEATURES_RO_COMPAT, XFS_SBS_FEATURES_INCOMPAT,
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XFS_SBS_FEATURES_LOG_INCOMPAT, XFS_SBS_CRC, XFS_SBS_PAD,
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XFS_SBS_PQUOTINO, XFS_SBS_LSN,
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XFS_SBS_FIELDCOUNT
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} xfs_sb_field_t;
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/*
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* Mask values, defined based on the xfs_sb_field_t values.
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* Only define the ones we're using.
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*/
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#define XFS_SB_MVAL(x) (1LL << XFS_SBS_ ## x)
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#define XFS_SB_UUID XFS_SB_MVAL(UUID)
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#define XFS_SB_FNAME XFS_SB_MVAL(FNAME)
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#define XFS_SB_ROOTINO XFS_SB_MVAL(ROOTINO)
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#define XFS_SB_RBMINO XFS_SB_MVAL(RBMINO)
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#define XFS_SB_RSUMINO XFS_SB_MVAL(RSUMINO)
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#define XFS_SB_VERSIONNUM XFS_SB_MVAL(VERSIONNUM)
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#define XFS_SB_UQUOTINO XFS_SB_MVAL(UQUOTINO)
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#define XFS_SB_GQUOTINO XFS_SB_MVAL(GQUOTINO)
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#define XFS_SB_QFLAGS XFS_SB_MVAL(QFLAGS)
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#define XFS_SB_SHARED_VN XFS_SB_MVAL(SHARED_VN)
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#define XFS_SB_UNIT XFS_SB_MVAL(UNIT)
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#define XFS_SB_WIDTH XFS_SB_MVAL(WIDTH)
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#define XFS_SB_ICOUNT XFS_SB_MVAL(ICOUNT)
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#define XFS_SB_IFREE XFS_SB_MVAL(IFREE)
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#define XFS_SB_FDBLOCKS XFS_SB_MVAL(FDBLOCKS)
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#define XFS_SB_FEATURES2 (XFS_SB_MVAL(FEATURES2) | \
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XFS_SB_MVAL(BAD_FEATURES2))
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#define XFS_SB_FEATURES_COMPAT XFS_SB_MVAL(FEATURES_COMPAT)
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#define XFS_SB_FEATURES_RO_COMPAT XFS_SB_MVAL(FEATURES_RO_COMPAT)
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#define XFS_SB_FEATURES_INCOMPAT XFS_SB_MVAL(FEATURES_INCOMPAT)
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#define XFS_SB_FEATURES_LOG_INCOMPAT XFS_SB_MVAL(FEATURES_LOG_INCOMPAT)
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#define XFS_SB_CRC XFS_SB_MVAL(CRC)
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#define XFS_SB_PQUOTINO XFS_SB_MVAL(PQUOTINO)
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#define XFS_SB_NUM_BITS ((int)XFS_SBS_FIELDCOUNT)
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#define XFS_SB_ALL_BITS ((1LL << XFS_SB_NUM_BITS) - 1)
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#define XFS_SB_MOD_BITS \
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(XFS_SB_UUID | XFS_SB_ROOTINO | XFS_SB_RBMINO | XFS_SB_RSUMINO | \
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XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | XFS_SB_GQUOTINO | \
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XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH | \
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XFS_SB_ICOUNT | XFS_SB_IFREE | XFS_SB_FDBLOCKS | XFS_SB_FEATURES2 | \
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XFS_SB_FEATURES_COMPAT | XFS_SB_FEATURES_RO_COMPAT | \
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XFS_SB_FEATURES_INCOMPAT | XFS_SB_FEATURES_LOG_INCOMPAT | \
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XFS_SB_PQUOTINO)
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/*
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* Misc. Flags - warning - these will be cleared by xfs_repair unless
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@ -693,10 +693,6 @@ xfs_reserve_blocks(
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* what to do. This means that the amount of free space can
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* change while we do this, so we need to retry if we end up
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* trying to reserve more space than is available.
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*
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* We also use the xfs_mod_incore_sb() interface so that we
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* don't have to care about whether per cpu counter are
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* enabled, disabled or even compiled in....
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*/
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retry:
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spin_lock(&mp->m_sb_lock);
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@ -1216,142 +1216,6 @@ xfs_mod_frextents(
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return ret;
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}
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/*
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* xfs_mod_incore_sb_unlocked() is a utility routine commonly used to apply
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* a delta to a specified field in the in-core superblock. Simply
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* switch on the field indicated and apply the delta to that field.
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* Fields are not allowed to dip below zero, so if the delta would
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* do this do not apply it and return EINVAL.
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*
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* The m_sb_lock must be held when this routine is called.
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*/
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STATIC int
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xfs_mod_incore_sb_unlocked(
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xfs_mount_t *mp,
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xfs_sb_field_t field,
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int64_t delta,
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int rsvd)
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{
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int scounter; /* short counter for 32 bit fields */
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long long lcounter; /* long counter for 64 bit fields */
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/*
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* With the in-core superblock spin lock held, switch
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* on the indicated field. Apply the delta to the
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* proper field. If the fields value would dip below
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* 0, then do not apply the delta and return EINVAL.
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*/
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switch (field) {
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case XFS_SBS_ICOUNT:
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case XFS_SBS_IFREE:
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case XFS_SBS_FDBLOCKS:
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case XFS_SBS_FREXTENTS:
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ASSERT(0);
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return -EINVAL;
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case XFS_SBS_DBLOCKS:
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lcounter = (long long)mp->m_sb.sb_dblocks;
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lcounter += delta;
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if (lcounter < 0) {
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ASSERT(0);
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return -EINVAL;
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}
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mp->m_sb.sb_dblocks = lcounter;
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return 0;
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case XFS_SBS_AGCOUNT:
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scounter = mp->m_sb.sb_agcount;
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scounter += delta;
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if (scounter < 0) {
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ASSERT(0);
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return -EINVAL;
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}
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mp->m_sb.sb_agcount = scounter;
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return 0;
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case XFS_SBS_IMAX_PCT:
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scounter = mp->m_sb.sb_imax_pct;
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scounter += delta;
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if (scounter < 0) {
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ASSERT(0);
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return -EINVAL;
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}
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mp->m_sb.sb_imax_pct = scounter;
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return 0;
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case XFS_SBS_REXTSIZE:
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scounter = mp->m_sb.sb_rextsize;
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scounter += delta;
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if (scounter < 0) {
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ASSERT(0);
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return -EINVAL;
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}
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mp->m_sb.sb_rextsize = scounter;
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return 0;
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case XFS_SBS_RBMBLOCKS:
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scounter = mp->m_sb.sb_rbmblocks;
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scounter += delta;
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if (scounter < 0) {
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ASSERT(0);
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return -EINVAL;
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}
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mp->m_sb.sb_rbmblocks = scounter;
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return 0;
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case XFS_SBS_RBLOCKS:
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lcounter = (long long)mp->m_sb.sb_rblocks;
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lcounter += delta;
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if (lcounter < 0) {
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ASSERT(0);
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return -EINVAL;
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}
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mp->m_sb.sb_rblocks = lcounter;
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return 0;
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case XFS_SBS_REXTENTS:
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lcounter = (long long)mp->m_sb.sb_rextents;
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lcounter += delta;
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if (lcounter < 0) {
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ASSERT(0);
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return -EINVAL;
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}
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mp->m_sb.sb_rextents = lcounter;
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return 0;
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case XFS_SBS_REXTSLOG:
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scounter = mp->m_sb.sb_rextslog;
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scounter += delta;
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if (scounter < 0) {
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ASSERT(0);
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return -EINVAL;
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}
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mp->m_sb.sb_rextslog = scounter;
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return 0;
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default:
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ASSERT(0);
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return -EINVAL;
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}
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}
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/*
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* xfs_mod_incore_sb() is used to change a field in the in-core
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* superblock structure by the specified delta. This modification
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* is protected by the m_sb_lock. Just use the xfs_mod_incore_sb_unlocked()
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* routine to do the work.
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*/
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int
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xfs_mod_incore_sb(
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struct xfs_mount *mp,
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xfs_sb_field_t field,
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int64_t delta,
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int rsvd)
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{
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int status;
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#ifdef HAVE_PERCPU_SB
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ASSERT(field < XFS_SBS_IFREE || field > XFS_SBS_FDBLOCKS);
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#endif
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spin_lock(&mp->m_sb_lock);
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status = xfs_mod_incore_sb_unlocked(mp, field, delta, rsvd);
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spin_unlock(&mp->m_sb_lock);
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return status;
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}
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/*
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* xfs_getsb() is called to obtain the buffer for the superblock.
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* The buffer is returned locked and read in from disk.
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@ -313,9 +313,8 @@ extern __uint64_t xfs_default_resblks(xfs_mount_t *mp);
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extern int xfs_mountfs(xfs_mount_t *mp);
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extern int xfs_initialize_perag(xfs_mount_t *mp, xfs_agnumber_t agcount,
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xfs_agnumber_t *maxagi);
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extern void xfs_unmountfs(xfs_mount_t *);
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extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int);
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extern int xfs_mod_icount(struct xfs_mount *mp, int64_t delta);
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extern int xfs_mod_ifree(struct xfs_mount *mp, int64_t delta);
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extern int xfs_mod_fdblocks(struct xfs_mount *mp, int64_t delta,
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