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xfs: remove duplicate buffer flags

Browse source 
Currently we define aliases for the buffer flags in various
namespaces, which only adds confusion.  Remove all but the XBF_
flags to clean this up a bit.

Note that we still abuse XFS_B_ASYNC/XBF_ASYNC for some non-buffer
uses, but I'll clean that up later.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Alex Elder <aelder@sgi.com>
This commit is contained in:
Christoph Hellwig 2010-01-19 09:56:44 +00:00 • committed by Alex Elder
parent a210c1aa7f
commit 0cadda1c5f
17 changed files with 53 additions and 70 deletions
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2
fs/xfs/linux-2.6/xfs_buf.c
View file

@ -1169,7 +1169,7 @@ xfs_bioerror_relse(
XFS_BUF_STALE(bp);
XFS_BUF_CLR_IODONE_FUNC(bp);
XFS_BUF_CLR_BDSTRAT_FUNC(bp);
if (!(fl & XFS_B_ASYNC)) {
if (!(fl & XBF_ASYNC)) {
/*
* Mark b_error and B_ERROR _both_.
* Lot's of chunkcache code assumes that.

22
fs/xfs/linux-2.6/xfs_buf.h
View file

@ -275,33 +275,19 @@ extern void xfs_buf_terminate(void);
({ char __b[BDEVNAME_SIZE]; bdevname((target)->bt_bdev, __b); __b; })
#define XFS_B_ASYNC XBF_ASYNC
#define XFS_B_DELWRI XBF_DELWRI
#define XFS_B_READ XBF_READ
#define XFS_B_WRITE XBF_WRITE
#define XFS_B_STALE XBF_STALE
#define XFS_BUF_TRYLOCK XBF_TRYLOCK
#define XFS_INCORE_TRYLOCK XBF_TRYLOCK
#define XFS_BUF_LOCK XBF_LOCK
#define XFS_BUF_MAPPED XBF_MAPPED
#define BUF_BUSY XBF_DONT_BLOCK
#define XFS_BUF_BFLAGS(bp) ((bp)->b_flags)
#define XFS_BUF_ZEROFLAGS(bp) ((bp)->b_flags &= \
~(XBF_READ|XBF_WRITE|XBF_ASYNC|XBF_DELWRI|XBF_ORDERED))
#define XFS_BUF_STALE(bp) ((bp)->b_flags |= XFS_B_STALE)
#define XFS_BUF_UNSTALE(bp) ((bp)->b_flags &= ~XFS_B_STALE)
#define XFS_BUF_ISSTALE(bp) ((bp)->b_flags & XFS_B_STALE)
#define XFS_BUF_STALE(bp) ((bp)->b_flags |= XBF_STALE)
#define XFS_BUF_UNSTALE(bp) ((bp)->b_flags &= ~XBF_STALE)
#define XFS_BUF_ISSTALE(bp) ((bp)->b_flags & XBF_STALE)
#define XFS_BUF_SUPER_STALE(bp) do { \
XFS_BUF_STALE(bp); \
xfs_buf_delwri_dequeue(bp); \
XFS_BUF_DONE(bp); \
} while (0)
#define XFS_BUF_MANAGE XBF_FS_MANAGED
#define XFS_BUF_UNMANAGE(bp) ((bp)->b_flags &= ~XBF_FS_MANAGED)
#define XFS_BUF_DELAYWRITE(bp) ((bp)->b_flags |= XBF_DELWRI)
@ -390,7 +376,7 @@ static inline void xfs_buf_relse(xfs_buf_t *bp)
#define xfs_biomove(bp, off, len, data, rw) \
xfs_buf_iomove((bp), (off), (len), (data), \
((rw) == XFS_B_WRITE) ? XBRW_WRITE : XBRW_READ)
((rw) == XBF_WRITE) ? XBRW_WRITE : XBRW_READ)
#define xfs_biozero(bp, off, len) \
xfs_buf_iomove((bp), (off), (len), NULL, XBRW_ZERO)

2
fs/xfs/linux-2.6/xfs_fs_subr.c
View file

@ -79,7 +79,7 @@ xfs_flush_pages(
xfs_iflags_clear(ip, XFS_ITRUNCATED);
ret = -filemap_fdatawrite(mapping);
}
if (flags & XFS_B_ASYNC)
if (flags & XBF_ASYNC)
return ret;
ret2 = xfs_wait_on_pages(ip, first, last);
if (!ret)

4
fs/xfs/linux-2.6/xfs_sync.c
View file

@ -234,7 +234,7 @@ xfs_sync_inode_data(
}
error = xfs_flush_pages(ip, 0, -1, (flags & SYNC_WAIT) ?
0 : XFS_B_ASYNC, FI_NONE);
0 : XBF_ASYNC, FI_NONE);
xfs_iunlock(ip, XFS_IOLOCK_SHARED);
out_wait:
@ -370,7 +370,7 @@ xfs_sync_fsdata(
if (flags & SYNC_TRYLOCK) {
ASSERT(!(flags & SYNC_WAIT));
bp = xfs_getsb(mp, XFS_BUF_TRYLOCK);
bp = xfs_getsb(mp, XBF_TRYLOCK);
if (!bp)
goto out;

3
fs/xfs/quota/xfs_dquot.c
View file

@ -1527,8 +1527,7 @@ xfs_qm_dqflock_pushbuf_wait(
* the flush lock when the I/O completes.
*/
bp = xfs_incore(dqp->q_mount->m_ddev_targp, dqp->q_blkno,
XFS_QI_DQCHUNKLEN(dqp->q_mount),
XFS_INCORE_TRYLOCK);
XFS_QI_DQCHUNKLEN(dqp->q_mount), XBF_TRYLOCK);
if (bp != NULL) {
if (XFS_BUF_ISDELAYWRITE(bp)) {
int error;

3
fs/xfs/quota/xfs_dquot_item.c
View file

@ -237,8 +237,7 @@ xfs_qm_dquot_logitem_pushbuf(
}
mp = dqp->q_mount;
bp = xfs_incore(mp->m_ddev_targp, qip->qli_format.qlf_blkno,
XFS_QI_DQCHUNKLEN(mp),
XFS_INCORE_TRYLOCK);
XFS_QI_DQCHUNKLEN(mp), XBF_TRYLOCK);
if (bp != NULL) {
if (XFS_BUF_ISDELAYWRITE(bp)) {
dopush = ((qip->qli_item.li_flags & XFS_LI_IN_AIL) &&

2
fs/xfs/xfs_alloc.c
View file

@ -2180,7 +2180,7 @@ xfs_alloc_read_agf(
ASSERT(agno != NULLAGNUMBER);
error = xfs_read_agf(mp, tp, agno,
(flags & XFS_ALLOC_FLAG_TRYLOCK) ? XFS_BUF_TRYLOCK : 0,
(flags & XFS_ALLOC_FLAG_TRYLOCK) ? XBF_TRYLOCK : 0,
bpp);
if (error)
return error;

12
fs/xfs/xfs_attr.c
View file

@ -2015,15 +2015,14 @@ xfs_attr_rmtval_get(xfs_da_args_t *args)
dblkno = XFS_FSB_TO_DADDR(mp, map[i].br_startblock);
blkcnt = XFS_FSB_TO_BB(mp, map[i].br_blockcount);
error = xfs_read_buf(mp, mp->m_ddev_targp, dblkno,
blkcnt,
XFS_BUF_LOCK | XBF_DONT_BLOCK,
blkcnt, XBF_LOCK | XBF_DONT_BLOCK,
&bp);
if (error)
return(error);
tmp = (valuelen < XFS_BUF_SIZE(bp))
? valuelen : XFS_BUF_SIZE(bp);
xfs_biomove(bp, 0, tmp, dst, XFS_B_READ);
xfs_biomove(bp, 0, tmp, dst, XBF_READ);
xfs_buf_relse(bp);
dst += tmp;
valuelen -= tmp;
@ -2149,13 +2148,13 @@ xfs_attr_rmtval_set(xfs_da_args_t *args)
blkcnt = XFS_FSB_TO_BB(mp, map.br_blockcount);
bp = xfs_buf_get(mp->m_ddev_targp, dblkno, blkcnt,
XFS_BUF_LOCK | XBF_DONT_BLOCK);
XBF_LOCK | XBF_DONT_BLOCK);
ASSERT(bp);
ASSERT(!XFS_BUF_GETERROR(bp));
tmp = (valuelen < XFS_BUF_SIZE(bp)) ? valuelen :
XFS_BUF_SIZE(bp);
xfs_biomove(bp, 0, tmp, src, XFS_B_WRITE);
xfs_biomove(bp, 0, tmp, src, XBF_WRITE);
if (tmp < XFS_BUF_SIZE(bp))
xfs_biozero(bp, tmp, XFS_BUF_SIZE(bp) - tmp);
if ((error = xfs_bwrite(mp, bp))) {/* GROT: NOTE: synchronous write */
@ -2216,8 +2215,7 @@ xfs_attr_rmtval_remove(xfs_da_args_t *args)
/*
* If the "remote" value is in the cache, remove it.
*/
bp = xfs_incore(mp->m_ddev_targp, dblkno, blkcnt,
XFS_INCORE_TRYLOCK);
bp = xfs_incore(mp->m_ddev_targp, dblkno, blkcnt, XBF_TRYLOCK);
if (bp) {
XFS_BUF_STALE(bp);
XFS_BUF_UNDELAYWRITE(bp);

2
fs/xfs/xfs_attr_leaf.c
View file

@ -2950,7 +2950,7 @@ xfs_attr_leaf_freextent(xfs_trans_t **trans, xfs_inode_t *dp,
map.br_blockcount);
bp = xfs_trans_get_buf(*trans,
dp->i_mount->m_ddev_targp,
dblkno, dblkcnt, XFS_BUF_LOCK);
dblkno, dblkcnt, XBF_LOCK);
xfs_trans_binval(*trans, bp);
/*
* Roll to next transaction.

4
fs/xfs/xfs_btree.c
View file

@ -977,7 +977,7 @@ xfs_btree_get_buf_block(
xfs_daddr_t d;
/* need to sort out how callers deal with failures first */
ASSERT(!(flags & XFS_BUF_TRYLOCK));
ASSERT(!(flags & XBF_TRYLOCK));
d = xfs_btree_ptr_to_daddr(cur, ptr);
*bpp = xfs_trans_get_buf(cur->bc_tp, mp->m_ddev_targp, d,
@ -1008,7 +1008,7 @@ xfs_btree_read_buf_block(
int error;
/* need to sort out how callers deal with failures first */
ASSERT(!(flags & XFS_BUF_TRYLOCK));
ASSERT(!(flags & XBF_TRYLOCK));
d = xfs_btree_ptr_to_daddr(cur, ptr);
error = xfs_trans_read_buf(mp, cur->bc_tp, mp->m_ddev_targp, d,

2
fs/xfs/xfs_ialloc.c
View file

@ -205,7 +205,7 @@ xfs_ialloc_inode_init(
d = XFS_AGB_TO_DADDR(mp, agno, agbno + (j * blks_per_cluster));
fbuf = xfs_trans_get_buf(tp, mp->m_ddev_targp, d,
mp->m_bsize * blks_per_cluster,
XFS_BUF_LOCK);
XBF_LOCK);
ASSERT(fbuf);
ASSERT(!XFS_BUF_GETERROR(fbuf));

20
fs/xfs/xfs_inode.c
View file

@ -151,7 +151,7 @@ xfs_imap_to_bp(
"an error %d on %s. Returning error.",
error, mp->m_fsname);
} else {
ASSERT(buf_flags & XFS_BUF_TRYLOCK);
ASSERT(buf_flags & XBF_TRYLOCK);
}
return error;
}
@ -239,7 +239,7 @@ xfs_inotobp(
if (error)
return error;
error = xfs_imap_to_bp(mp, tp, &imap, &bp, XFS_BUF_LOCK, imap_flags);
error = xfs_imap_to_bp(mp, tp, &imap, &bp, XBF_LOCK, imap_flags);
if (error)
return error;
@ -285,7 +285,7 @@ xfs_itobp(
return error;
if (!bp) {
ASSERT(buf_flags & XFS_BUF_TRYLOCK);
ASSERT(buf_flags & XBF_TRYLOCK);
ASSERT(tp == NULL);
*bpp = NULL;
return EAGAIN;
@ -807,7 +807,7 @@ xfs_iread(
* Get pointers to the on-disk inode and the buffer containing it.
*/
error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &bp,
XFS_BUF_LOCK, iget_flags);
XBF_LOCK, iget_flags);
if (error)
return error;
dip = (xfs_dinode_t *)xfs_buf_offset(bp, ip->i_imap.im_boffset);
@ -1751,7 +1751,7 @@ xfs_iunlink(
* Here we put the head pointer into our next pointer,
* and then we fall through to point the head at us.
*/
error = xfs_itobp(mp, tp, ip, &dip, &ibp, XFS_BUF_LOCK);
error = xfs_itobp(mp, tp, ip, &dip, &ibp, XBF_LOCK);
if (error)
return error;
@ -1833,7 +1833,7 @@ xfs_iunlink_remove(
* of dealing with the buffer when there is no need to
* change it.
*/
error = xfs_itobp(mp, tp, ip, &dip, &ibp, XFS_BUF_LOCK);
error = xfs_itobp(mp, tp, ip, &dip, &ibp, XBF_LOCK);
if (error) {
cmn_err(CE_WARN,
"xfs_iunlink_remove: xfs_itobp() returned an error %d on %s. Returning error.",
@ -1895,7 +1895,7 @@ xfs_iunlink_remove(
* Now last_ibp points to the buffer previous to us on
* the unlinked list. Pull us from the list.
*/
error = xfs_itobp(mp, tp, ip, &dip, &ibp, XFS_BUF_LOCK);
error = xfs_itobp(mp, tp, ip, &dip, &ibp, XBF_LOCK);
if (error) {
cmn_err(CE_WARN,
"xfs_iunlink_remove: xfs_itobp() returned an error %d on %s. Returning error.",
@ -2040,7 +2040,7 @@ xfs_ifree_cluster(
bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, blkno,
mp->m_bsize * blks_per_cluster,
XFS_BUF_LOCK);
XBF_LOCK);
pre_flushed = 0;
lip = XFS_BUF_FSPRIVATE(bp, xfs_log_item_t *);
@ -2151,7 +2151,7 @@ xfs_ifree(
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
error = xfs_itobp(ip->i_mount, tp, ip, &dip, &ibp, XFS_BUF_LOCK);
error = xfs_itobp(ip->i_mount, tp, ip, &dip, &ibp, XBF_LOCK);
if (error)
return error;
@ -2952,7 +2952,7 @@ xfs_iflush(
* Get the buffer containing the on-disk inode.
*/
error = xfs_itobp(mp, NULL, ip, &dip, &bp,
noblock ? XFS_BUF_TRYLOCK : XFS_BUF_LOCK);
noblock ? XBF_TRYLOCK : XBF_LOCK);
if (error || !bp) {
xfs_ifunlock(ip);
return error;

2
fs/xfs/xfs_inode_item.c
View file

@ -785,7 +785,7 @@ xfs_inode_item_pushbuf(
mp = ip->i_mount;
bp = xfs_incore(mp->m_ddev_targp, iip->ili_format.ilf_blkno,
iip->ili_format.ilf_len, XFS_INCORE_TRYLOCK);
iip->ili_format.ilf_len, XBF_TRYLOCK);
if (bp != NULL) {
if (XFS_BUF_ISDELAYWRITE(bp)) {

8
fs/xfs/xfs_log_recover.c
View file

@ -2184,9 +2184,9 @@ xlog_recover_do_buffer_trans(
}
mp = log->l_mp;
buf_flags = XFS_BUF_LOCK;
buf_flags = XBF_LOCK;
if (!(flags & XFS_BLI_INODE_BUF))
buf_flags |= XFS_BUF_MAPPED;
buf_flags |= XBF_MAPPED;
bp = xfs_buf_read(mp->m_ddev_targp, blkno, len, buf_flags);
if (XFS_BUF_ISERROR(bp)) {
@ -2288,7 +2288,7 @@ xlog_recover_do_inode_trans(
}
bp = xfs_buf_read(mp->m_ddev_targp, in_f->ilf_blkno, in_f->ilf_len,
XFS_BUF_LOCK);
XBF_LOCK);
if (XFS_BUF_ISERROR(bp)) {
xfs_ioerror_alert("xlog_recover_do..(read#2)", mp,
bp, in_f->ilf_blkno);
@ -3146,7 +3146,7 @@ xlog_recover_process_one_iunlink(
/*
* Get the on disk inode to find the next inode in the bucket.
*/
error = xfs_itobp(mp, NULL, ip, &dip, &ibp, XFS_BUF_LOCK);
error = xfs_itobp(mp, NULL, ip, &dip, &ibp, XBF_LOCK);
if (error)
goto fail_iput;

4
fs/xfs/xfs_mount.c
View file

@ -665,7 +665,7 @@ xfs_readsb(xfs_mount_t *mp, int flags)
* access to the superblock.
*/
sector_size = xfs_getsize_buftarg(mp->m_ddev_targp);
extra_flags = XFS_BUF_LOCK | XFS_BUF_MANAGE | XFS_BUF_MAPPED;
extra_flags = XBF_LOCK | XBF_FS_MANAGED | XBF_MAPPED;
bp = xfs_buf_read(mp->m_ddev_targp, XFS_SB_DADDR, BTOBB(sector_size),
extra_flags);
@ -1969,7 +1969,7 @@ xfs_getsb(
ASSERT(mp->m_sb_bp != NULL);
bp = mp->m_sb_bp;
if (flags & XFS_BUF_TRYLOCK) {
if (flags & XBF_TRYLOCK) {
if (!XFS_BUF_CPSEMA(bp)) {
return NULL;
}

27
fs/xfs/xfs_trans_buf.c
View file

@ -75,13 +75,14 @@ xfs_trans_get_buf(xfs_trans_t *tp,
xfs_buf_log_item_t *bip;
if (flags == 0)
flags = XFS_BUF_LOCK | XFS_BUF_MAPPED;
flags = XBF_LOCK | XBF_MAPPED;
/*
* Default to a normal get_buf() call if the tp is NULL.
*/
if (tp == NULL)
return xfs_buf_get(target_dev, blkno, len, flags | BUF_BUSY);
return xfs_buf_get(target_dev, blkno, len,
flags | XBF_DONT_BLOCK);
/*
* If we find the buffer in the cache with this transaction
@ -117,14 +118,14 @@ xfs_trans_get_buf(xfs_trans_t *tp,
}
/*
* We always specify the BUF_BUSY flag within a transaction so
* that get_buf does not try to push out a delayed write buffer
* We always specify the XBF_DONT_BLOCK flag within a transaction
* so that get_buf does not try to push out a delayed write buffer
* which might cause another transaction to take place (if the
* buffer was delayed alloc). Such recursive transactions can
* easily deadlock with our current transaction as well as cause
* us to run out of stack space.
*/
bp = xfs_buf_get(target_dev, blkno, len, flags | BUF_BUSY);
bp = xfs_buf_get(target_dev, blkno, len, flags | XBF_DONT_BLOCK);
if (bp == NULL) {
return NULL;
}
@ -290,15 +291,15 @@ xfs_trans_read_buf(
int error;
if (flags == 0)
flags = XFS_BUF_LOCK | XFS_BUF_MAPPED;
flags = XBF_LOCK | XBF_MAPPED;
/*
* Default to a normal get_buf() call if the tp is NULL.
*/
if (tp == NULL) {
bp = xfs_buf_read(target, blkno, len, flags | BUF_BUSY);
bp = xfs_buf_read(target, blkno, len, flags | XBF_DONT_BLOCK);
if (!bp)
return (flags & XFS_BUF_TRYLOCK) ?
return (flags & XBF_TRYLOCK) ?
EAGAIN : XFS_ERROR(ENOMEM);
if (XFS_BUF_GETERROR(bp) != 0) {
@ -385,14 +386,14 @@ xfs_trans_read_buf(
}
/*
* We always specify the BUF_BUSY flag within a transaction so
* that get_buf does not try to push out a delayed write buffer
* We always specify the XBF_DONT_BLOCK flag within a transaction
* so that get_buf does not try to push out a delayed write buffer
* which might cause another transaction to take place (if the
* buffer was delayed alloc). Such recursive transactions can
* easily deadlock with our current transaction as well as cause
* us to run out of stack space.
*/
bp = xfs_buf_read(target, blkno, len, flags | BUF_BUSY);
bp = xfs_buf_read(target, blkno, len, flags | XBF_DONT_BLOCK);
if (bp == NULL) {
*bpp = NULL;
return 0;
@ -472,8 +473,8 @@ shutdown_abort:
if (XFS_BUF_ISSTALE(bp) && XFS_BUF_ISDELAYWRITE(bp))
cmn_err(CE_NOTE, "about to pop assert, bp == 0x%p", bp);
#endif
ASSERT((XFS_BUF_BFLAGS(bp) & (XFS_B_STALE|XFS_B_DELWRI)) !=
(XFS_B_STALE|XFS_B_DELWRI));
ASSERT((XFS_BUF_BFLAGS(bp) & (XBF_STALE|XBF_DELWRI)) !=
(XBF_STALE|XBF_DELWRI));
trace_xfs_trans_read_buf_shut(bp, _RET_IP_);
xfs_buf_relse(bp);

4
fs/xfs/xfs_vnodeops.c
View file

@ -256,7 +256,7 @@ xfs_setattr(
iattr->ia_size > ip->i_d.di_size) {
code = xfs_flush_pages(ip,
ip->i_d.di_size, iattr->ia_size,
XFS_B_ASYNC, FI_NONE);
XBF_ASYNC, FI_NONE);
}
/* wait for all I/O to complete */
@ -1096,7 +1096,7 @@ xfs_release(
*/
truncated = xfs_iflags_test_and_clear(ip, XFS_ITRUNCATED);
if (truncated && VN_DIRTY(VFS_I(ip)) && ip->i_delayed_blks > 0)
xfs_flush_pages(ip, 0, -1, XFS_B_ASYNC, FI_NONE);
xfs_flush_pages(ip, 0, -1, XBF_ASYNC, FI_NONE);
}
if (ip->i_d.di_nlink != 0) {