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[XFS] Ondisk format extension for extended attributes (attr2). Basically,

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the data/attr forks now grow up/down from either end of the literal area,
rather than dividing the literal area into two chunks and growing both
upward.  Means we can now make much more efficient use of the attribute
space, incl. fitting DMF attributes inline in 256 byte inodes, and large
jumps in dbench3 performance numbers.  It is self enabling, but can be
forced on/off via the attr2/noattr2 mount options.

SGI-PV: 941645
SGI-Modid: xfs-linux:xfs-kern:23835a

Signed-off-by: Nathan Scott <nathans@sgi.com>
This commit is contained in:
Nathan Scott 2005-11-02 10:34:53 +11:00
parent aa82daa061
commit d8cc890d40
13 changed files with 354 additions and 114 deletions
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61
fs/xfs/xfs_attr.c
View file

@ -200,7 +200,7 @@ xfs_attr_get(bhv_desc_t *bdp, char *name, char *value, int *valuelenp,
return(error);
}
int
STATIC int
xfs_attr_set_int(xfs_inode_t *dp, char *name, int namelen,
char *value, int valuelen, int flags)
{
@ -219,13 +219,19 @@ xfs_attr_set_int(xfs_inode_t *dp, char *name, int namelen,
if ((error = XFS_QM_DQATTACH(mp, dp, 0)))
return (error);
/*
* Determine space new attribute will use, and if it would be
* "local" or "remote" (note: local != inline).
*/
size = xfs_attr_leaf_newentsize(namelen, valuelen,
mp->m_sb.sb_blocksize, &local);
/*
* If the inode doesn't have an attribute fork, add one.
* (inode must not be locked when we call this routine)
*/
if (XFS_IFORK_Q(dp) == 0) {
error = xfs_bmap_add_attrfork(dp, rsvd);
if (error)
if ((error = xfs_bmap_add_attrfork(dp, size, rsvd)))
return(error);
}
@ -243,14 +249,9 @@ xfs_attr_set_int(xfs_inode_t *dp, char *name, int namelen,
args.firstblock = &firstblock;
args.flist = &flist;
args.whichfork = XFS_ATTR_FORK;
args.addname = 1;
args.oknoent = 1;
/* Determine space new attribute will use, and if it will be inline
* or out of line.
*/
size = xfs_attr_leaf_newentsize(namelen, valuelen,
mp->m_sb.sb_blocksize, &local);
nblks = XFS_DAENTER_SPACE_RES(mp, XFS_ATTR_FORK);
if (local) {
if (size > (mp->m_sb.sb_blocksize >> 1)) {
@ -322,7 +323,7 @@ xfs_attr_set_int(xfs_inode_t *dp, char *name, int namelen,
* Build initial attribute list (if required).
*/
if (dp->i_d.di_aformat == XFS_DINODE_FMT_EXTENTS)
(void)xfs_attr_shortform_create(&args);
xfs_attr_shortform_create(&args);
/*
* Try to add the attr to the attribute list in
@ -467,7 +468,7 @@ xfs_attr_set(bhv_desc_t *bdp, char *name, char *value, int valuelen, int flags,
* Generic handler routine to remove a name from an attribute list.
* Transitions attribute list from Btree to shortform as necessary.
*/
int
STATIC int
xfs_attr_remove_int(xfs_inode_t *dp, char *name, int namelen, int flags)
{
xfs_da_args_t args;
@ -523,7 +524,6 @@ xfs_attr_remove_int(xfs_inode_t *dp, char *name, int namelen, int flags)
XFS_ATTRRM_LOG_COUNT))) {
xfs_trans_cancel(args.trans, 0);
return(error);
}
xfs_ilock(dp, XFS_ILOCK_EXCL);
@ -822,7 +822,7 @@ xfs_attr_inactive(xfs_inode_t *dp)
STATIC int
xfs_attr_shortform_addname(xfs_da_args_t *args)
{
int newsize, retval;
int newsize, forkoff, retval;
retval = xfs_attr_shortform_lookup(args);
if ((args->flags & ATTR_REPLACE) && (retval == ENOATTR)) {
@ -834,16 +834,18 @@ xfs_attr_shortform_addname(xfs_da_args_t *args)
ASSERT(retval == 0);
}
if (args->namelen >= XFS_ATTR_SF_ENTSIZE_MAX ||
args->valuelen >= XFS_ATTR_SF_ENTSIZE_MAX)
return(XFS_ERROR(ENOSPC));
newsize = XFS_ATTR_SF_TOTSIZE(args->dp);
newsize += XFS_ATTR_SF_ENTSIZE_BYNAME(args->namelen, args->valuelen);
if ((newsize <= XFS_IFORK_ASIZE(args->dp)) &&
(args->namelen < XFS_ATTR_SF_ENTSIZE_MAX) &&
(args->valuelen < XFS_ATTR_SF_ENTSIZE_MAX)) {
retval = xfs_attr_shortform_add(args);
ASSERT(retval == 0);
} else {
forkoff = xfs_attr_shortform_bytesfit(args->dp, newsize);
if (!forkoff)
return(XFS_ERROR(ENOSPC));
}
xfs_attr_shortform_add(args, forkoff);
return(0);
}
@ -863,7 +865,7 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
{
xfs_inode_t *dp;
xfs_dabuf_t *bp;
int retval, error, committed;
int retval, error, committed, forkoff;
/*
* Read the (only) block in the attribute list in.
@ -1006,9 +1008,9 @@ xfs_attr_leaf_addname(xfs_da_args_t *args)
/*
* If the result is small enough, shrink it all into the inode.
*/
if (xfs_attr_shortform_allfit(bp, dp)) {
if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) {
XFS_BMAP_INIT(args->flist, args->firstblock);
error = xfs_attr_leaf_to_shortform(bp, args);
error = xfs_attr_leaf_to_shortform(bp, args, forkoff);
/* bp is gone due to xfs_da_shrink_inode */
if (!error) {
error = xfs_bmap_finish(&args->trans,
@ -1060,8 +1062,7 @@ xfs_attr_leaf_removename(xfs_da_args_t *args)
{
xfs_inode_t *dp;
xfs_dabuf_t *bp;
int committed;
int error;
int error, committed, forkoff;
/*
* Remove the attribute.
@ -1086,9 +1087,9 @@ xfs_attr_leaf_removename(xfs_da_args_t *args)
/*
* If the result is small enough, shrink it all into the inode.
*/
if (xfs_attr_shortform_allfit(bp, dp)) {
if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) {
XFS_BMAP_INIT(args->flist, args->firstblock);
error = xfs_attr_leaf_to_shortform(bp, args);
error = xfs_attr_leaf_to_shortform(bp, args, forkoff);
/* bp is gone due to xfs_da_shrink_inode */
if (!error) {
error = xfs_bmap_finish(&args->trans, args->flist,
@ -1459,7 +1460,7 @@ xfs_attr_node_removename(xfs_da_args_t *args)
xfs_da_state_blk_t *blk;
xfs_inode_t *dp;
xfs_dabuf_t *bp;
int retval, error, committed;
int retval, error, committed, forkoff;
/*
* Tie a string around our finger to remind us where we are.
@ -1580,9 +1581,9 @@ xfs_attr_node_removename(xfs_da_args_t *args)
bp->data)->hdr.info.magic, ARCH_CONVERT)
== XFS_ATTR_LEAF_MAGIC);
if (xfs_attr_shortform_allfit(bp, dp)) {
if ((forkoff = xfs_attr_shortform_allfit(bp, dp))) {
XFS_BMAP_INIT(args->flist, args->firstblock);
error = xfs_attr_leaf_to_shortform(bp, args);
error = xfs_attr_leaf_to_shortform(bp, args, forkoff);
/* bp is gone due to xfs_da_shrink_inode */
if (!error) {
error = xfs_bmap_finish(&args->trans,

175
fs/xfs/xfs_attr_leaf.c
View file

@ -118,13 +118,82 @@ STATIC int xfs_attr_put_listent(xfs_attr_list_context_t *context,
/*========================================================================
* External routines when dirsize < XFS_LITINO(mp).
* External routines when attribute fork size < XFS_LITINO(mp).
*========================================================================*/
/*
* Query whether the requested number of additional bytes of extended
* attribute space will be able to fit inline.
* Returns zero if not, else the di_forkoff fork offset to be used in the
* literal area for attribute data once the new bytes have been added.
*
* di_forkoff must be 8 byte aligned, hence is stored as a >>3 value;
* special case for dev/uuid inodes, they have fixed size data forks.
*/
int
xfs_attr_shortform_bytesfit(xfs_inode_t *dp, int bytes)
{
int offset;
int minforkoff; /* lower limit on valid forkoff locations */
int maxforkoff; /* upper limit on valid forkoff locations */
xfs_mount_t *mp = dp->i_mount;
if (unlikely(mp->m_flags & XFS_MOUNT_COMPAT_ATTR)) {
if (bytes <= XFS_IFORK_ASIZE(dp))
return mp->m_attroffset >> 3;
return 0;
}
offset = (XFS_LITINO(mp) - bytes) >> 3; /* rounded down */
switch (dp->i_d.di_format) {
case XFS_DINODE_FMT_DEV:
minforkoff = roundup(sizeof(xfs_dev_t), 8) >> 3;
return (offset >= minforkoff) ? minforkoff : 0;
case XFS_DINODE_FMT_UUID:
minforkoff = roundup(sizeof(uuid_t), 8) >> 3;
return (offset >= minforkoff) ? minforkoff : 0;
}
/* data fork btree root can have at least this many key/ptr pairs */
minforkoff = MAX(dp->i_df.if_bytes, XFS_BMDR_SPACE_CALC(MINDBTPTRS));
minforkoff = roundup(minforkoff, 8) >> 3;
/* attr fork btree root can have at least this many key/ptr pairs */
maxforkoff = XFS_LITINO(mp) - XFS_BMDR_SPACE_CALC(MINABTPTRS);
maxforkoff = maxforkoff >> 3; /* rounded down */
if (offset >= minforkoff && offset < maxforkoff)
return offset;
if (offset >= maxforkoff)
return maxforkoff;
return 0;
}
/*
* Switch on the ATTR2 superblock bit (implies also FEATURES2)
*/
STATIC void
xfs_sbversion_add_attr2(xfs_mount_t *mp, xfs_trans_t *tp)
{
unsigned long s;
if (!(mp->m_flags & XFS_MOUNT_COMPAT_ATTR) &&
!(XFS_SB_VERSION_HASATTR2(&mp->m_sb))) {
s = XFS_SB_LOCK(mp);
if (!XFS_SB_VERSION_HASATTR2(&mp->m_sb)) {
XFS_SB_VERSION_ADDATTR2(&mp->m_sb);
XFS_SB_UNLOCK(mp, s);
xfs_mod_sb(tp, XFS_SB_VERSIONNUM | XFS_SB_FEATURES2);
} else
XFS_SB_UNLOCK(mp, s);
}
}
/*
* Create the initial contents of a shortform attribute list.
*/
int
void
xfs_attr_shortform_create(xfs_da_args_t *args)
{
xfs_attr_sf_hdr_t *hdr;
@ -148,29 +217,37 @@ xfs_attr_shortform_create(xfs_da_args_t *args)
hdr->count = 0;
INT_SET(hdr->totsize, ARCH_CONVERT, sizeof(*hdr));
xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_ADATA);
return(0);
}
/*
* Add a name/value pair to the shortform attribute list.
* Overflow from the inode has already been checked for.
*/
int
xfs_attr_shortform_add(xfs_da_args_t *args)
void
xfs_attr_shortform_add(xfs_da_args_t *args, int forkoff)
{
xfs_attr_shortform_t *sf;
xfs_attr_sf_entry_t *sfe;
int i, offset, size;
xfs_mount_t *mp;
xfs_inode_t *dp;
xfs_ifork_t *ifp;
dp = args->dp;
mp = dp->i_mount;
dp->i_d.di_forkoff = forkoff;
dp->i_df.if_ext_max =
XFS_IFORK_DSIZE(dp) / (uint)sizeof(xfs_bmbt_rec_t);
dp->i_afp->if_ext_max =
XFS_IFORK_ASIZE(dp) / (uint)sizeof(xfs_bmbt_rec_t);
ifp = dp->i_afp;
ASSERT(ifp->if_flags & XFS_IFINLINE);
sf = (xfs_attr_shortform_t *)ifp->if_u1.if_data;
sfe = &sf->list[0];
for (i = 0; i < INT_GET(sf->hdr.count, ARCH_CONVERT);
sfe = XFS_ATTR_SF_NEXTENTRY(sfe), i++) {
#ifdef DEBUG
if (sfe->namelen != args->namelen)
continue;
if (memcmp(args->name, sfe->nameval, args->namelen) != 0)
@ -181,7 +258,8 @@ xfs_attr_shortform_add(xfs_da_args_t *args)
if (((args->flags & ATTR_ROOT) != 0) !=
((sfe->flags & XFS_ATTR_ROOT) != 0))
continue;
return(XFS_ERROR(EEXIST));
ASSERT(0);
#endif
}
offset = (char *)sfe - (char *)sf;
@ -200,11 +278,11 @@ xfs_attr_shortform_add(xfs_da_args_t *args)
INT_MOD(sf->hdr.totsize, ARCH_CONVERT, size);
xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_ADATA);
return(0);
xfs_sbversion_add_attr2(mp, args->trans);
}
/*
* Remove a name from the shortform attribute list structure.
* Remove an attribute from the shortform attribute list structure.
*/
int
xfs_attr_shortform_remove(xfs_da_args_t *args)
@ -212,17 +290,16 @@ xfs_attr_shortform_remove(xfs_da_args_t *args)
xfs_attr_shortform_t *sf;
xfs_attr_sf_entry_t *sfe;
int base, size=0, end, totsize, i;
xfs_mount_t *mp;
xfs_inode_t *dp;
/*
* Remove the attribute.
*/
dp = args->dp;
mp = dp->i_mount;
base = sizeof(xfs_attr_sf_hdr_t);
sf = (xfs_attr_shortform_t *)dp->i_afp->if_u1.if_data;
sfe = &sf->list[0];
for (i = 0; i < INT_GET(sf->hdr.count, ARCH_CONVERT);
sfe = XFS_ATTR_SF_NEXTENTRY(sfe),
end = INT_GET(sf->hdr.count, ARCH_CONVERT);
for (i = 0; i < end; sfe = XFS_ATTR_SF_NEXTENTRY(sfe),
base += size, i++) {
size = XFS_ATTR_SF_ENTSIZE(sfe);
if (sfe->namelen != args->namelen)
@ -237,19 +314,51 @@ xfs_attr_shortform_remove(xfs_da_args_t *args)
continue;
break;
}
if (i == INT_GET(sf->hdr.count, ARCH_CONVERT))
if (i == end)
return(XFS_ERROR(ENOATTR));
/*
* Fix up the attribute fork data, covering the hole
*/
end = base + size;
totsize = INT_GET(sf->hdr.totsize, ARCH_CONVERT);
if (end != totsize) {
memmove(&((char *)sf)[base], &((char *)sf)[end],
totsize - end);
}
if (end != totsize)
memmove(&((char *)sf)[base], &((char *)sf)[end], totsize - end);
INT_MOD(sf->hdr.count, ARCH_CONVERT, -1);
INT_MOD(sf->hdr.totsize, ARCH_CONVERT, -size);
/*
* Fix up the start offset of the attribute fork
*/
totsize -= size;
if (totsize == sizeof(xfs_attr_sf_hdr_t) && !args->addname) {
/*
* Last attribute now removed, revert to original
* inode format making all literal area available
* to the data fork once more.
*/
xfs_idestroy_fork(dp, XFS_ATTR_FORK);
dp->i_d.di_forkoff = 0;
dp->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS;
ASSERT(dp->i_d.di_anextents == 0);
ASSERT(dp->i_afp == NULL);
dp->i_df.if_ext_max =
XFS_IFORK_DSIZE(dp) / (uint)sizeof(xfs_bmbt_rec_t);
xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE);
} else {
xfs_idata_realloc(dp, -size, XFS_ATTR_FORK);
xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE | XFS_ILOG_ADATA);
dp->i_d.di_forkoff = xfs_attr_shortform_bytesfit(dp, totsize);
ASSERT(dp->i_d.di_forkoff);
ASSERT(totsize > sizeof(xfs_attr_sf_hdr_t) || args->addname);
dp->i_afp->if_ext_max =
XFS_IFORK_ASIZE(dp) / (uint)sizeof(xfs_bmbt_rec_t);
dp->i_df.if_ext_max =
XFS_IFORK_DSIZE(dp) / (uint)sizeof(xfs_bmbt_rec_t);
xfs_trans_log_inode(args->trans, dp,
XFS_ILOG_CORE | XFS_ILOG_ADATA);
}
xfs_sbversion_add_attr2(mp, args->trans);
return(0);
}
@ -649,14 +758,16 @@ xfs_attr_shortform_allfit(xfs_dabuf_t *bp, xfs_inode_t *dp)
+ name_loc->namelen
+ INT_GET(name_loc->valuelen, ARCH_CONVERT);
}
return( bytes < XFS_IFORK_ASIZE(dp) );
if (bytes == sizeof(struct xfs_attr_sf_hdr))
return(-1);
return(xfs_attr_shortform_bytesfit(dp, bytes));
}
/*
* Convert a leaf attribute list to shortform attribute list
*/
int
xfs_attr_leaf_to_shortform(xfs_dabuf_t *bp, xfs_da_args_t *args)
xfs_attr_leaf_to_shortform(xfs_dabuf_t *bp, xfs_da_args_t *args, int forkoff)
{
xfs_attr_leafblock_t *leaf;
xfs_attr_leaf_entry_t *entry;
@ -683,9 +794,25 @@ xfs_attr_leaf_to_shortform(xfs_dabuf_t *bp, xfs_da_args_t *args)
error = xfs_da_shrink_inode(args, 0, bp);
if (error)
goto out;
error = xfs_attr_shortform_create(args);
if (error)
if (forkoff == -1) {
/*
* Last attribute was removed, revert to original
* inode format making all literal area available
* to the data fork once more.
*/
xfs_idestroy_fork(dp, XFS_ATTR_FORK);
dp->i_d.di_forkoff = 0;
dp->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS;
ASSERT(dp->i_d.di_anextents == 0);
ASSERT(dp->i_afp == NULL);
dp->i_df.if_ext_max =
XFS_IFORK_DSIZE(dp) / (uint)sizeof(xfs_bmbt_rec_t);
xfs_trans_log_inode(args->trans, dp, XFS_ILOG_CORE);
goto out;
}
xfs_attr_shortform_create(args);
/*
* Copy the attributes
@ -713,7 +840,7 @@ xfs_attr_leaf_to_shortform(xfs_dabuf_t *bp, xfs_da_args_t *args)
nargs.hashval = INT_GET(entry->hashval, ARCH_CONVERT);
nargs.flags = (entry->flags & XFS_ATTR_SECURE) ? ATTR_SECURE :
((entry->flags & XFS_ATTR_ROOT) ? ATTR_ROOT : 0);
xfs_attr_shortform_add(&nargs);
xfs_attr_shortform_add(&nargs, forkoff);
}
error = 0;

14
fs/xfs/xfs_attr_leaf.h
View file

@ -238,23 +238,25 @@ typedef struct xfs_attr_inactive_list {
*========================================================================*/
/*
* Internal routines when dirsize < XFS_LITINO(mp).
* Internal routines when attribute fork size < XFS_LITINO(mp).
*/
int xfs_attr_shortform_create(struct xfs_da_args *args);
int xfs_attr_shortform_add(struct xfs_da_args *add);
void xfs_attr_shortform_create(struct xfs_da_args *args);
void xfs_attr_shortform_add(struct xfs_da_args *args, int forkoff);
int xfs_attr_shortform_lookup(struct xfs_da_args *args);
int xfs_attr_shortform_getvalue(struct xfs_da_args *args);
int xfs_attr_shortform_to_leaf(struct xfs_da_args *args);
int xfs_attr_shortform_remove(struct xfs_da_args *remove);
int xfs_attr_shortform_remove(struct xfs_da_args *args);
int xfs_attr_shortform_list(struct xfs_attr_list_context *context);
int xfs_attr_shortform_allfit(struct xfs_dabuf *bp, struct xfs_inode *dp);
int xfs_attr_shortform_bytesfit(xfs_inode_t *dp, int bytes);
/*
* Internal routines when dirsize == XFS_LBSIZE(mp).
* Internal routines when attribute fork size == XFS_LBSIZE(mp).
*/
int xfs_attr_leaf_to_node(struct xfs_da_args *args);
int xfs_attr_leaf_to_shortform(struct xfs_dabuf *bp,
struct xfs_da_args *args);
struct xfs_da_args *args, int forkoff);
int xfs_attr_leaf_clearflag(struct xfs_da_args *args);
int xfs_attr_leaf_setflag(struct xfs_da_args *args);
int xfs_attr_leaf_flipflags(xfs_da_args_t *args);

82
fs/xfs/xfs_bmap.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
* Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
@ -62,6 +62,7 @@
#include "xfs_error.h"
#include "xfs_da_btree.h"
#include "xfs_dir_leaf.h"
#include "xfs_attr_leaf.h"
#include "xfs_bit.h"
#include "xfs_rw.h"
#include "xfs_quota.h"
@ -3336,6 +3337,29 @@ xfs_bmap_insert_exlist(
xfs_bmbt_set_all(&base[to], new);
}
/*
* Helper routine to reset inode di_forkoff field when switching
* attribute fork from local to extent format - we reset it where
* possible to make space available for inline data fork extents.
*/
STATIC void
xfs_bmap_forkoff_reset(
xfs_mount_t *mp,
xfs_inode_t *ip,
int whichfork)
{
if (whichfork == XFS_ATTR_FORK &&
(ip->i_d.di_format != XFS_DINODE_FMT_DEV) &&
(ip->i_d.di_format != XFS_DINODE_FMT_UUID) &&
((mp->m_attroffset >> 3) > ip->i_d.di_forkoff)) {
ip->i_d.di_forkoff = mp->m_attroffset >> 3;
ip->i_df.if_ext_max = XFS_IFORK_DSIZE(ip) /
(uint)sizeof(xfs_bmbt_rec_t);
ip->i_afp->if_ext_max = XFS_IFORK_ASIZE(ip) /
(uint)sizeof(xfs_bmbt_rec_t);
}
}
/*
* Convert a local file to an extents file.
* This code is out of bounds for data forks of regular files,
@ -3403,6 +3427,7 @@ xfs_bmap_local_to_extents(
memcpy((char *)XFS_BUF_PTR(bp), ifp->if_u1.if_data,
ifp->if_bytes);
xfs_trans_log_buf(tp, bp, 0, ifp->if_bytes - 1);
xfs_bmap_forkoff_reset(args.mp, ip, whichfork);
xfs_idata_realloc(ip, -ifp->if_bytes, whichfork);
xfs_iext_realloc(ip, 1, whichfork);
ep = ifp->if_u1.if_extents;
@ -3413,8 +3438,10 @@ xfs_bmap_local_to_extents(
XFS_TRANS_MOD_DQUOT_BYINO(args.mp, tp, ip,
XFS_TRANS_DQ_BCOUNT, 1L);
flags |= XFS_ILOG_FEXT(whichfork);
} else
} else {
ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) == 0);
xfs_bmap_forkoff_reset(ip->i_mount, ip, whichfork);
}
ifp->if_flags &= ~XFS_IFINLINE;
ifp->if_flags |= XFS_IFEXTENTS;
XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS);
@ -3796,22 +3823,24 @@ xfs_bunmap_trace(
int /* error code */
xfs_bmap_add_attrfork(
xfs_inode_t *ip, /* incore inode pointer */
int rsvd) /* OK to allocated reserved blocks in trans */
int size, /* space new attribute needs */
int rsvd) /* xact may use reserved blks */
{
int blks; /* space reservation */
int committed; /* xaction was committed */
int error; /* error return value */
xfs_fsblock_t firstblock; /* 1st block/ag allocated */
xfs_bmap_free_t flist; /* freed extent list */
int logflags; /* logging flags */
xfs_mount_t *mp; /* mount structure */
unsigned long s; /* spinlock spl value */
xfs_trans_t *tp; /* transaction pointer */
unsigned long s; /* spinlock spl value */
int blks; /* space reservation */
int version = 1; /* superblock attr version */
int committed; /* xaction was committed */
int logflags; /* logging flags */
int error; /* error return value */
ASSERT(XFS_IFORK_Q(ip) == 0);
ASSERT(ip->i_df.if_ext_max ==
XFS_IFORK_DSIZE(ip) / (uint)sizeof(xfs_bmbt_rec_t));
if (XFS_IFORK_Q(ip))
return 0;
mp = ip->i_mount;
ASSERT(!XFS_NOT_DQATTACHED(mp, ip));
tp = xfs_trans_alloc(mp, XFS_TRANS_ADDAFORK);
@ -3853,7 +3882,11 @@ xfs_bmap_add_attrfork(
case XFS_DINODE_FMT_LOCAL:
case XFS_DINODE_FMT_EXTENTS:
case XFS_DINODE_FMT_BTREE:
ip->i_d.di_forkoff = xfs_attr_shortform_bytesfit(ip, size);
if (!ip->i_d.di_forkoff)
ip->i_d.di_forkoff = mp->m_attroffset >> 3;
else if (!(mp->m_flags & XFS_MOUNT_COMPAT_ATTR))
version = 2;
break;
default:
ASSERT(0);
@ -3890,12 +3923,21 @@ xfs_bmap_add_attrfork(
xfs_trans_log_inode(tp, ip, logflags);
if (error)
goto error2;
if (!XFS_SB_VERSION_HASATTR(&mp->m_sb)) {
if (!XFS_SB_VERSION_HASATTR(&mp->m_sb) ||
(!XFS_SB_VERSION_HASATTR2(&mp->m_sb) && version == 2)) {
logflags = 0;
s = XFS_SB_LOCK(mp);
if (!XFS_SB_VERSION_HASATTR(&mp->m_sb)) {
XFS_SB_VERSION_ADDATTR(&mp->m_sb);
logflags |= XFS_SB_VERSIONNUM;
}
if (!XFS_SB_VERSION_HASATTR2(&mp->m_sb) && version == 2) {
XFS_SB_VERSION_ADDATTR2(&mp->m_sb);
logflags |= (XFS_SB_VERSIONNUM | XFS_SB_FEATURES2);
}
if (logflags) {
XFS_SB_UNLOCK(mp, s);
xfs_mod_sb(tp, XFS_SB_VERSIONNUM);
xfs_mod_sb(tp, logflags);
} else
XFS_SB_UNLOCK(mp, s);
}
@ -3988,13 +4030,19 @@ xfs_bmap_compute_maxlevels(
* (a signed 32-bit number, xfs_extnum_t), or by di_anextents
* (a signed 16-bit number, xfs_aextnum_t).
*/
maxleafents = (whichfork == XFS_DATA_FORK) ? MAXEXTNUM : MAXAEXTNUM;
if (whichfork == XFS_DATA_FORK) {
maxleafents = MAXEXTNUM;
sz = (mp->m_flags & XFS_MOUNT_COMPAT_ATTR) ?
mp->m_attroffset : XFS_BMDR_SPACE_CALC(MINDBTPTRS);
} else {
maxleafents = MAXAEXTNUM;
sz = (mp->m_flags & XFS_MOUNT_COMPAT_ATTR) ?
mp->m_sb.sb_inodesize - mp->m_attroffset :
XFS_BMDR_SPACE_CALC(MINABTPTRS);
}
maxrootrecs = (int)XFS_BTREE_BLOCK_MAXRECS(sz, xfs_bmdr, 0);
minleafrecs = mp->m_bmap_dmnr[0];
minnoderecs = mp->m_bmap_dmnr[1];
sz = (whichfork == XFS_DATA_FORK) ?
mp->m_attroffset :
mp->m_sb.sb_inodesize - mp->m_attroffset;
maxrootrecs = (int)XFS_BTREE_BLOCK_MAXRECS(sz, xfs_bmdr, 0);
maxblocks = (maxleafents + minleafrecs - 1) / minleafrecs;
for (level = 1; maxblocks > 1; level++) {
if (maxblocks <= maxrootrecs)

3
fs/xfs/xfs_bmap.h
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
* Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
@ -156,6 +156,7 @@ xfs_bmap_trace_exlist(
int /* error code */
xfs_bmap_add_attrfork(
struct xfs_inode *ip, /* incore inode pointer */
int size, /* space needed for new attribute */
int rsvd); /* flag for reserved block allocation */
/*

18
fs/xfs/xfs_dir.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved.
* Copyright (c) 2000-2001,2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
@ -192,11 +192,23 @@ xfs_dir_mount(xfs_mount_t *mp)
uint shortcount, leafcount, count;
mp->m_dirversion = 1;
shortcount = (mp->m_attroffset - (uint)sizeof(xfs_dir_sf_hdr_t)) /
if (mp->m_flags & XFS_MOUNT_COMPAT_ATTR) {
shortcount = (mp->m_attroffset -
(uint)sizeof(xfs_dir_sf_hdr_t)) /
(uint)sizeof(xfs_dir_sf_entry_t);
leafcount = (XFS_LBSIZE(mp) - (uint)sizeof(xfs_dir_leaf_hdr_t)) /
leafcount = (XFS_LBSIZE(mp) -
(uint)sizeof(xfs_dir_leaf_hdr_t)) /
((uint)sizeof(xfs_dir_leaf_entry_t) +
(uint)sizeof(xfs_dir_leaf_name_t));
} else {
shortcount = (XFS_BMDR_SPACE_CALC(MINABTPTRS) -
(uint)sizeof(xfs_dir_sf_hdr_t)) /
(uint)sizeof(xfs_dir_sf_entry_t);
leafcount = (XFS_LBSIZE(mp) -
(uint)sizeof(xfs_dir_leaf_hdr_t)) /
((uint)sizeof(xfs_dir_leaf_entry_t) +
(uint)sizeof(xfs_dir_leaf_name_t));
}
count = shortcount > leafcount ? shortcount : leafcount;
mp->m_dircook_elog = xfs_da_log2_roundup(count + 1);
ASSERT(mp->m_dircook_elog <= mp->m_sb.sb_blocklog);

3
fs/xfs/xfs_fs.h
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 1995-2003 Silicon Graphics, Inc. All Rights Reserved.
* Copyright (c) 1995-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2.1 of the GNU Lesser General Public License
@ -251,6 +251,7 @@ typedef struct xfs_fsop_resblks {
#define XFS_FSOP_GEOM_FLAGS_DIRV2 0x0080 /* directory version 2 */
#define XFS_FSOP_GEOM_FLAGS_LOGV2 0x0100 /* log format version 2 */
#define XFS_FSOP_GEOM_FLAGS_SECTOR 0x0200 /* sector sizes >1BB */
#define XFS_FSOP_GEOM_FLAGS_ATTR2 0x0400 /* inline attributes rework */
/*

6
fs/xfs/xfs_fsops.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2000-2002 Silicon Graphics, Inc. All Rights Reserved.
* Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
@ -110,7 +110,9 @@ xfs_fs_geometry(
(XFS_SB_VERSION_HASDIRV2(&mp->m_sb) ?
XFS_FSOP_GEOM_FLAGS_DIRV2 : 0) |
(XFS_SB_VERSION_HASSECTOR(&mp->m_sb) ?
XFS_FSOP_GEOM_FLAGS_SECTOR : 0);
XFS_FSOP_GEOM_FLAGS_SECTOR : 0) |
(XFS_SB_VERSION_HASATTR2(&mp->m_sb) ?
XFS_FSOP_GEOM_FLAGS_ATTR2 : 0);
geo->logsectsize = XFS_SB_VERSION_HASSECTOR(&mp->m_sb) ?
mp->m_sb.sb_logsectsize : BBSIZE;
geo->rtsectsize = mp->m_sb.sb_blocksize;

17
fs/xfs/xfs_macros.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
* Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
@ -1995,6 +1995,14 @@ xfs_sb_version_addshared(xfs_sb_t *sbp)
}
#endif
#if XFS_WANT_FUNCS_C || (XFS_WANT_SPACE_C && XFSSO_XFS_SB_VERSION_ADDATTR2)
void
xfs_sb_version_addattr2(xfs_sb_t *sbp)
{
XFS_SB_VERSION_ADDATTR2(sbp);
}
#endif
#if XFS_WANT_FUNCS_C || (XFS_WANT_SPACE_C && XFSSO_XFS_SB_VERSION_HASALIGN)
int
xfs_sb_version_hasalign(xfs_sb_t *sbp)
@ -2139,3 +2147,10 @@ xfs_sb_version_hasmorebits(xfs_sb_t *sbp)
}
#endif
#if XFS_WANT_FUNCS_C || (XFS_WANT_SPACE_C && XFSSO_XFS_SB_VERSION_HASATTR2)
int
xfs_sb_version_hasattr2(xfs_sb_t *sbp)
{
return XFS_SB_VERSION_HASATTR2(sbp);
}
#endif

7
fs/xfs/xfs_mount.c
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
* Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
@ -584,12 +584,13 @@ xfs_mount_common(xfs_mount_t *mp, xfs_sb_t *sbp)
ASSERT(sbp->sb_inodesize >= 256 && sbp->sb_inodesize <= 2048);
switch (sbp->sb_inodesize) {
case 256:
mp->m_attroffset = XFS_LITINO(mp) - XFS_BMDR_SPACE_CALC(2);
mp->m_attroffset = XFS_LITINO(mp) -
XFS_BMDR_SPACE_CALC(MINABTPTRS);
break;
case 512:
case 1024:
case 2048:
mp->m_attroffset = XFS_BMDR_SPACE_CALC(12);
mp->m_attroffset = XFS_BMDR_SPACE_CALC(6 * MINABTPTRS);
break;
default:
ASSERT(0);

44
fs/xfs/xfs_sb.h
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved.
* Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
@ -72,7 +72,8 @@ struct xfs_mount;
XFS_SB_VERSION_DALIGNBIT | \
XFS_SB_VERSION_SHAREDBIT | \
XFS_SB_VERSION_LOGV2BIT | \
XFS_SB_VERSION_SECTORBIT)
XFS_SB_VERSION_SECTORBIT | \
XFS_SB_VERSION_MOREBITSBIT)
#define XFS_SB_VERSION_OKSASHBITS \
(XFS_SB_VERSION_NUMBITS | \
XFS_SB_VERSION_REALFBITS | \
@ -103,12 +104,15 @@ struct xfs_mount;
*/
#define XFS_SB_VERSION2_REALFBITS 0x00ffffff /* Mask: features */
#define XFS_SB_VERSION2_RESERVED1BIT 0x00000001
#define XFS_SB_VERSION2_RESERVED2BIT 0x00000002
#define XFS_SB_VERSION2_RESERVED4BIT 0x00000004
#define XFS_SB_VERSION2_ATTR2BIT 0x00000008 /* Inline attr rework */
#define XFS_SB_VERSION2_SASHFBITS 0xff000000 /* Mask: features that
require changing
PROM and SASH */
#define XFS_SB_VERSION2_OKREALFBITS \
(0)
(XFS_SB_VERSION2_ATTR2BIT)
#define XFS_SB_VERSION2_OKSASHFBITS \
(0)
#define XFS_SB_VERSION2_OKREALBITS \
@ -118,8 +122,7 @@ struct xfs_mount;
/*
* mkfs macro to set up sb_features2 word
*/
#define XFS_SB_VERSION2_MKFS(xyz) \
((xyz) ? 0 : 0)
#define XFS_SB_VERSION2_MKFS(resvd1, sbcntr) 0
typedef struct xfs_sb
{
@ -176,7 +179,7 @@ typedef struct xfs_sb
__uint8_t sb_logsectlog; /* log2 of the log sector size */
__uint16_t sb_logsectsize; /* sector size for the log, bytes */
__uint32_t sb_logsunit; /* stripe unit size for the log */
__uint32_t sb_features2; /* additonal feature bits */
__uint32_t sb_features2; /* additional feature bits */
} xfs_sb_t;
/*
@ -216,12 +219,15 @@ typedef enum {
#define XFS_SB_SHARED_VN XFS_SB_MVAL(SHARED_VN)
#define XFS_SB_UNIT XFS_SB_MVAL(UNIT)
#define XFS_SB_WIDTH XFS_SB_MVAL(WIDTH)
#define XFS_SB_FEATURES2 XFS_SB_MVAL(FEATURES2)
#define XFS_SB_NUM_BITS ((int)XFS_SBS_FIELDCOUNT)
#define XFS_SB_ALL_BITS ((1LL << XFS_SB_NUM_BITS) - 1)
#define XFS_SB_MOD_BITS \
(XFS_SB_UUID | XFS_SB_ROOTINO | XFS_SB_RBMINO | XFS_SB_RSUMINO | \
XFS_SB_VERSIONNUM | XFS_SB_UQUOTINO | XFS_SB_GQUOTINO | \
XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH)
XFS_SB_QFLAGS | XFS_SB_SHARED_VN | XFS_SB_UNIT | XFS_SB_WIDTH | \
XFS_SB_FEATURES2)
/*
* Misc. Flags - warning - these will be cleared by xfs_repair unless
@ -500,13 +506,31 @@ int xfs_sb_version_hasmorebits(xfs_sb_t *sbp);
/*
* sb_features2 bit version macros.
*
* For example, for a bit defined as XFS_SB_VERSION2_YBIT, has a macro:
* For example, for a bit defined as XFS_SB_VERSION2_FUNBIT, has a macro:
*
* SB_VERSION_HASYBIT(xfs_sb_t *sbp)
* SB_VERSION_HASFUNBIT(xfs_sb_t *sbp)
* ((XFS_SB_VERSION_HASMOREBITS(sbp) &&
* ((sbp)->sb_versionnum & XFS_SB_VERSION2_YBIT)
* ((sbp)->sb_features2 & XFS_SB_VERSION2_FUNBIT)
*/
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_HASATTR2)
int xfs_sb_version_hasattr2(xfs_sb_t *sbp);
#define XFS_SB_VERSION_HASATTR2(sbp) xfs_sb_version_hasattr2(sbp)
#else
#define XFS_SB_VERSION_HASATTR2(sbp) \
((XFS_SB_VERSION_HASMOREBITS(sbp)) && \
((sbp)->sb_features2 & XFS_SB_VERSION2_ATTR2BIT))
#endif
#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_SB_VERSION_ADDATTR2)
void xfs_sb_version_addattr2(xfs_sb_t *sbp);
#define XFS_SB_VERSION_ADDATTR2(sbp) xfs_sb_version_addattr2(sbp)
#else
#define XFS_SB_VERSION_ADDATTR2(sbp) \
((sbp)->sb_versionnum = \
((sbp)->sb_versionnum | XFS_SB_VERSION_MOREBITSBIT), \
((sbp)->sb_features2 = \
((sbp)->sb_features2 | XFS_SB_VERSION2_ATTR2BIT)))
#endif
/*
* end of superblock version macros
*/

8
fs/xfs/xfs_types.h
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved.
* Copyright (c) 2000-2005 Silicon Graphics, Inc. All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
@ -153,6 +153,12 @@ typedef __uint8_t xfs_arch_t; /* architecture of an xfs fs */
#define MAXEXTNUM ((xfs_extnum_t)0x7fffffff) /* signed int */
#define MAXAEXTNUM ((xfs_aextnum_t)0x7fff) /* signed short */
/*
* Min numbers of data/attr fork btree root pointers.
*/
#define MINDBTPTRS 3
#define MINABTPTRS 2
/*
* MAXNAMELEN is the length (including the terminating null) of
* the longest permissible file (component) name.

18
fs/xfs/xfs_vfsops.c
View file

@ -268,19 +268,14 @@ xfs_start_flags(
#endif
if (ap->flags & XFSMNT_NOATIME)
mp->m_flags |= XFS_MOUNT_NOATIME;
if (ap->flags & XFSMNT_RETERR)
mp->m_flags |= XFS_MOUNT_RETERR;
if (ap->flags & XFSMNT_NOALIGN)
mp->m_flags |= XFS_MOUNT_NOALIGN;
if (ap->flags & XFSMNT_SWALLOC)
mp->m_flags |= XFS_MOUNT_SWALLOC;
if (ap->flags & XFSMNT_OSYNCISOSYNC)
mp->m_flags |= XFS_MOUNT_OSYNCISOSYNC;
if (ap->flags & XFSMNT_32BITINODES)
mp->m_flags |= (XFS_MOUNT_32BITINODES | XFS_MOUNT_32BITINOOPT);
@ -300,15 +295,14 @@ xfs_start_flags(
if (ap->flags & XFSMNT_IHASHSIZE)
mp->m_flags |= XFS_MOUNT_IHASHSIZE;
if (ap->flags & XFSMNT_IDELETE)
mp->m_flags |= XFS_MOUNT_IDELETE;
if (ap->flags & XFSMNT_DIRSYNC)
mp->m_flags |= XFS_MOUNT_DIRSYNC;
if (ap->flags & XFSMNT_COMPAT_IOSIZE)
mp->m_flags |= XFS_MOUNT_COMPAT_IOSIZE;
if (ap->flags & XFSMNT_COMPAT_ATTR)
mp->m_flags |= XFS_MOUNT_COMPAT_ATTR;
/*
* no recovery flag requires a read-only mount
@ -1643,7 +1637,7 @@ xfs_vget(
#define MNTOPT_IHASHSIZE "ihashsize" /* size of inode hash table */
#define MNTOPT_NORECOVERY "norecovery" /* don't run XFS recovery */
#define MNTOPT_BARRIER "barrier" /* use writer barriers for log write and
unwritten extent conversion */
* unwritten extent conversion */
#define MNTOPT_OSYNCISOSYNC "osyncisosync" /* o_sync is REALLY o_sync */
#define MNTOPT_64BITINODE "inode64" /* inodes can be allocated anywhere */
#define MNTOPT_IKEEP "ikeep" /* do not free empty inode clusters */
@ -1651,6 +1645,8 @@ xfs_vget(
#define MNTOPT_LARGEIO "largeio" /* report large I/O sizes in stat() */
#define MNTOPT_NOLARGEIO "nolargeio" /* do not report large I/O sizes
* in stat(). */
#define MNTOPT_ATTR2 "attr2" /* do use attr2 attribute format */
#define MNTOPT_NOATTR2 "noattr2" /* do not use attr2 attribute format */
STATIC unsigned long
suffix_strtoul(const char *cp, char **endp, unsigned int base)
@ -1820,6 +1816,10 @@ xfs_parseargs(
args->flags &= ~XFSMNT_COMPAT_IOSIZE;
} else if (!strcmp(this_char, MNTOPT_NOLARGEIO)) {
args->flags |= XFSMNT_COMPAT_IOSIZE;
} else if (!strcmp(this_char, MNTOPT_ATTR2)) {
args->flags &= ~XFSMNT_COMPAT_ATTR;
} else if (!strcmp(this_char, MNTOPT_NOATTR2)) {
args->flags |= XFSMNT_COMPAT_ATTR;
} else if (!strcmp(this_char, "osyncisdsync")) {
/* no-op, this is now the default */
printk("XFS: osyncisdsync is now the default, option is deprecated.\n");