/*
- * Copyright (C) International Business Machines Corp., 2000-2003
+ * Copyright (C) International Business Machines Corp., 2000-2004
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
- *
+ *
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
+ * along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/fs.h>
#include <linux/buffer_head.h>
#include <linux/pagemap.h>
-#include <linux/vserver/xid.h>
+#include <linux/quotaops.h>
+#include <linux/vs_tag.h>
#include "jfs_incore.h"
+#include "jfs_inode.h"
#include "jfs_filsys.h"
#include "jfs_dinode.h"
#include "jfs_dmap.h"
#include "jfs_superblock.h"
#include "jfs_debug.h"
+/*
+ * __mark_inode_dirty expects inodes to be hashed. Since we don't want
+ * special inodes in the fileset inode space, we hash them to a dummy head
+ */
+static HLIST_HEAD(aggregate_hash);
+
/*
* imap locks
*/
/* iag free list lock */
-#define IAGFREE_LOCK_INIT(imap) init_MUTEX(&imap->im_freelock)
-#define IAGFREE_LOCK(imap) down(&imap->im_freelock)
-#define IAGFREE_UNLOCK(imap) up(&imap->im_freelock)
+#define IAGFREE_LOCK_INIT(imap) mutex_init(&imap->im_freelock)
+#define IAGFREE_LOCK(imap) mutex_lock(&imap->im_freelock)
+#define IAGFREE_UNLOCK(imap) mutex_unlock(&imap->im_freelock)
/* per ag iag list locks */
-#define AG_LOCK_INIT(imap,index) init_MUTEX(&(imap->im_aglock[index]))
-#define AG_LOCK(imap,agno) down(&imap->im_aglock[agno])
-#define AG_UNLOCK(imap,agno) up(&imap->im_aglock[agno])
-
-/*
- * external references
- */
-extern struct address_space_operations jfs_aops;
+#define AG_LOCK_INIT(imap,index) mutex_init(&(imap->im_aglock[index]))
+#define AG_LOCK(imap,agno) mutex_lock(&imap->im_aglock[agno])
+#define AG_UNLOCK(imap,agno) mutex_unlock(&imap->im_aglock[agno])
/*
* forward references
*/
-static int diAllocAG(struct inomap *, int, boolean_t, struct inode *);
-static int diAllocAny(struct inomap *, int, boolean_t, struct inode *);
+static int diAllocAG(struct inomap *, int, bool, struct inode *);
+static int diAllocAny(struct inomap *, int, bool, struct inode *);
static int diAllocBit(struct inomap *, struct iag *, int);
static int diAllocExt(struct inomap *, int, struct inode *);
static int diAllocIno(struct inomap *, int, struct inode *);
static int copy_from_dinode(struct dinode *, struct inode *);
static void copy_to_dinode(struct dinode *, struct inode *);
-/*
- * debug code for double-checking inode map
- */
-/* #define _JFS_DEBUG_IMAP 1 */
-
-#ifdef _JFS_DEBUG_IMAP
-#define DBG_DIINIT(imap) DBGdiInit(imap)
-#define DBG_DIALLOC(imap, ino) DBGdiAlloc(imap, ino)
-#define DBG_DIFREE(imap, ino) DBGdiFree(imap, ino)
-
-static void *DBGdiInit(struct inomap * imap);
-static void DBGdiAlloc(struct inomap * imap, ino_t ino);
-static void DBGdiFree(struct inomap * imap, ino_t ino);
-#else
-#define DBG_DIINIT(imap)
-#define DBG_DIALLOC(imap, ino)
-#define DBG_DIFREE(imap, ino)
-#endif /* _JFS_DEBUG_IMAP */
-
/*
* NAME: diMount()
*
* FUNCTION: initialize the incore inode map control structures for
* a fileset or aggregate init time.
*
- * the inode map's control structure (dinomap) is
+ * the inode map's control structure (dinomap) is
* brought in from disk and placed in virtual memory.
*
* PARAMETERS:
* RETURN VALUES:
* 0 - success
* -ENOMEM - insufficient free virtual memory.
- * -EIO - i/o error.
+ * -EIO - i/o error.
*/
int diMount(struct inode *ipimap)
{
struct inomap *imap;
struct metapage *mp;
int index;
- struct dinomap *dinom_le;
+ struct dinomap_disk *dinom_le;
/*
* allocate/initialize the in-memory inode map control structure
*/
/* allocate the in-memory inode map control structure. */
- imap = (struct inomap *) kmalloc(sizeof(struct inomap), GFP_KERNEL);
+ imap = kmalloc(sizeof(struct inomap), GFP_KERNEL);
if (imap == NULL) {
jfs_err("diMount: kmalloc returned NULL!");
return -ENOMEM;
}
/* copy the on-disk version to the in-memory version. */
- dinom_le = (struct dinomap *) mp->data;
+ dinom_le = (struct dinomap_disk *) mp->data;
imap->im_freeiag = le32_to_cpu(dinom_le->in_freeiag);
imap->im_nextiag = le32_to_cpu(dinom_le->in_nextiag);
atomic_set(&imap->im_numinos, le32_to_cpu(dinom_le->in_numinos));
imap->im_ipimap = ipimap;
JFS_IP(ipimap)->i_imap = imap;
-// DBG_DIINIT(imap);
-
return (0);
}
* RETURN VALUES:
* 0 - success
* -ENOMEM - insufficient free virtual memory.
- * -EIO - i/o error.
+ * -EIO - i/o error.
*/
int diUnmount(struct inode *ipimap, int mounterror)
{
*/
int diSync(struct inode *ipimap)
{
- struct dinomap *dinom_le;
+ struct dinomap_disk *dinom_le;
struct inomap *imp = JFS_IP(ipimap)->i_imap;
struct metapage *mp;
int index;
}
/* copy the in-memory version to the on-disk version */
- dinom_le = (struct dinomap *) mp->data;
+ dinom_le = (struct dinomap_disk *) mp->data;
dinom_le->in_freeiag = cpu_to_le32(imp->im_freeiag);
dinom_le->in_nextiag = cpu_to_le32(imp->im_nextiag);
dinom_le->in_numinos = cpu_to_le32(atomic_read(&imp->im_numinos));
/*
* write out dirty pages of imap
*/
- filemap_fdatawrite(ipimap->i_mapping);
- filemap_fdatawait(ipimap->i_mapping);
+ filemap_write_and_wait(ipimap->i_mapping);
diWriteSpecial(ipimap, 0);
* on entry, the specifed incore inode should itself
* specify the disk inode number corresponding to the
* incore inode (i.e. i_number should be initialized).
- *
+ *
* this routine handles incore inode initialization for
* both "special" and "regular" inodes. special inodes
* are those required early in the mount process and
* is not yet initialized. these "special" inodes are
* identified by a NULL inode map inode pointer and are
* actually initialized by a call to diReadSpecial().
- *
+ *
* for regular inodes, the iag describing the disk inode
* is read from disk to determine the inode extent address
* for the disk inode. with the inode extent address in
*
* RETURN VALUES:
* 0 - success
- * -EIO - i/o error.
+ * -EIO - i/o error.
* -ENOMEM - insufficient memory
- *
+ *
*/
int diRead(struct inode *ip)
{
struct inomap *imap;
int block_offset;
int inodes_left;
- uint pageno;
+ unsigned long pageno;
int rel_inode;
jfs_info("diRead: ino = %ld", ip->i_ino);
}
- ip->i_mapping->a_ops = &jfs_aops;
+ ip->i_mapping->a_ops = &jfs_metapage_aops;
mapping_set_gfp_mask(ip->i_mapping, GFP_NOFS);
+ /* Allocations to metadata inodes should not affect quotas */
+ ip->i_flags |= S_NOQUOTA;
+
if ((inum == FILESYSTEM_I) && (JFS_IP(ip)->ipimap == sbi->ipaimap)) {
sbi->gengen = le32_to_cpu(dp->di_gengen);
sbi->inostamp = le32_to_cpu(dp->di_inostamp);
/* release the page */
release_metapage(mp);
+ hlist_add_head(&ip->i_hash, &aggregate_hash);
+
return (ip);
}
ino_t inum = ip->i_ino;
struct metapage *mp;
- ip->i_state &= ~I_DIRTY;
-
if (secondary)
address = addressPXD(&sbi->ait2) >> sbi->l2nbperpage;
else
jfs_err("diFreeSpecial called with NULL ip!");
return;
}
- filemap_fdatawrite(ip->i_mapping);
- filemap_fdatawait(ip->i_mapping);
+ filemap_write_and_wait(ip->i_mapping);
truncate_inode_pages(ip->i_mapping, 0);
iput(ip);
}
* page of the extent that contains the disk inode is
* read and the disk inode portion of the incore inode
* is copied to the disk inode.
- *
+ *
* PARAMETERS:
* tid - transacation id
* ip - pointer to incore inode to be written to the inode extent.
*
* RETURN VALUES:
* 0 - success
- * -EIO - i/o error.
+ * -EIO - i/o error.
*/
int diWrite(tid_t tid, struct inode *ip)
{
int block_offset;
int inodes_left;
struct metapage *mp;
- uint pageno;
+ unsigned long pageno;
int rel_inode;
int dioffset;
struct inode *ipimap;
* copy btree root from in-memory inode to on-disk inode
*
* (tlock is taken from inline B+-tree root in in-memory
- * inode when the B+-tree root is updated, which is pointed
+ * inode when the B+-tree root is updated, which is pointed
* by jfs_ip->blid as well as being on tx tlock list)
*
- * further processing of btree root is based on the copy
- * in in-memory inode, where txLog() will log from, and,
+ * further processing of btree root is based on the copy
+ * in in-memory inode, where txLog() will log from, and,
* for xtree root, txUpdateMap() will update map and reset
* XAD_NEW bit;
*/
memcpy(&dp->di_DASD, &ip->i_DASD, sizeof(struct dasd));
#endif /* _JFS_FASTDASD */
- /* release the buffer holding the updated on-disk inode.
+ /* release the buffer holding the updated on-disk inode.
* the buffer will be later written by commit processing.
*/
write_metapage(mp);
* if the inode to be freed represents the first (only)
* free inode within the iag, the iag will be placed on
* the ag free inode list.
- *
+ *
* freeing the inode will cause the inode extent to be
* freed if the inode is the only allocated inode within
* the extent. in this case all the disk resource backing
* any updates and are held until all updates are complete.
*
* PARAMETERS:
- * ip - inode to be freed.
+ * ip - inode to be freed.
*
* RETURN VALUES:
* 0 - success
- * -EIO - i/o error.
+ * -EIO - i/o error.
*/
int diFree(struct inode *ip)
{
*/
iagno = INOTOIAG(inum);
- /* make sure that the iag is contained within
+ /* make sure that the iag is contained within
* the map.
*/
if (iagno >= imap->im_nextiag) {
*/
iagp->inofreefwd =
cpu_to_le32(imap->im_agctl[agno].inofree);
- iagp->inofreeback = -1;
+ iagp->inofreeback = cpu_to_le32(-1);
imap->im_agctl[agno].inofree = iagno;
}
IREAD_UNLOCK(ipimap);
/* update the free inode summary map for the extent if
* freeing the inode means the extent will now have free
- * inodes (i.e., the inode being freed is the first free
+ * inodes (i.e., the inode being freed is the first free
* inode of extent),
*/
- if (iagp->wmap[extno] == ONES) {
+ if (iagp->wmap[extno] == cpu_to_le32(ONES)) {
sword = extno >> L2EXTSPERSUM;
bitno = extno & (EXTSPERSUM - 1);
iagp->inosmap[sword] &=
/* update the bitmap.
*/
iagp->wmap[extno] = cpu_to_le32(bitmap);
- DBG_DIFREE(imap, inum);
/* update the free inode counts at the iag, ag and
* map level.
iagp->extfreefwd =
cpu_to_le32(imap->im_agctl[agno].extfree);
- iagp->extfreeback = -1;
+ iagp->extfreeback = cpu_to_le32(-1);
imap->im_agctl[agno].extfree = iagno;
} else {
/* remove the iag from the ag extent list if all extents
imap->im_agctl[agno].extfree =
le32_to_cpu(iagp->extfreefwd);
- iagp->extfreefwd = iagp->extfreeback = -1;
+ iagp->extfreefwd = iagp->extfreeback = cpu_to_le32(-1);
IAGFREE_LOCK(imap);
iagp->iagfree = cpu_to_le32(imap->im_freeiag);
imap->im_agctl[agno].inofree =
le32_to_cpu(iagp->inofreefwd);
- iagp->inofreefwd = iagp->inofreeback = -1;
+ iagp->inofreefwd = iagp->inofreeback = cpu_to_le32(-1);
}
- /* update the inode extent address and working map
+ /* update the inode extent address and working map
* to reflect the free extent.
- * the permanent map should have been updated already
+ * the permanent map should have been updated already
* for the inode being freed.
*/
if (iagp->pmap[extno] != 0) {
jfs_error(ip->i_sb, "diFree: the pmap does not show inode free");
}
iagp->wmap[extno] = 0;
- DBG_DIFREE(imap, inum);
PXDlength(&iagp->inoext[extno], 0);
PXDaddress(&iagp->inoext[extno], 0);
/* update the free extent and free inode summary maps
* to reflect the freed extent.
- * the inode summary map is marked to indicate no inodes
+ * the inode summary map is marked to indicate no inodes
* available for the freed extent.
*/
sword = extno >> L2EXTSPERSUM;
* start transaction to update block allocation map
* for the inode extent freed;
*
- * N.B. AG_LOCK is released and iag will be released below, and
+ * N.B. AG_LOCK is released and iag will be released below, and
* other thread may allocate inode from/reusing the ixad freed
- * BUT with new/different backing inode extent from the extent
- * to be freed by the transaction;
+ * BUT with new/different backing inode extent from the extent
+ * to be freed by the transaction;
*/
tid = txBegin(ipimap->i_sb, COMMIT_FORCE);
+ mutex_lock(&JFS_IP(ipimap)->commit_mutex);
- /* acquire tlock of the iag page of the freed ixad
+ /* acquire tlock of the iag page of the freed ixad
* to force the page NOHOMEOK (even though no data is
- * logged from the iag page) until NOREDOPAGE|FREEXTENT log
+ * logged from the iag page) until NOREDOPAGE|FREEXTENT log
* for the free of the extent is committed;
* write FREEXTENT|NOREDOPAGE log record
* N.B. linelock is overlaid as freed extent descriptor;
* logredo needs the IAG number and IAG extent index in order
* to ensure that the IMap is consistent. The least disruptive
* way to pass these values through to the transaction manager
- * is in the iplist array.
- *
+ * is in the iplist array.
+ *
* It's not pretty, but it works.
*/
iplist[1] = (struct inode *) (size_t)iagno;
rc = txCommit(tid, 1, &iplist[0], COMMIT_FORCE);
txEnd(tid);
+ mutex_unlock(&JFS_IP(ipimap)->commit_mutex);
/* unlock the AG inode map information */
AG_UNLOCK(imap, agno);
struct jfs_inode_info *jfs_ip = JFS_IP(ip);
ip->i_ino = (iagno << L2INOSPERIAG) + ino;
- DBG_DIALLOC(JFS_IP(ipimap)->i_imap, ip->i_ino);
jfs_ip->ixpxd = iagp->inoext[extno];
jfs_ip->agno = BLKTOAG(le64_to_cpu(iagp->agstart), sbi);
jfs_ip->active_ag = -1;
/*
* NAME: diAlloc(pip,dir,ip)
*
- * FUNCTION: allocate a disk inode from the inode working map
+ * FUNCTION: allocate a disk inode from the inode working map
* for a fileset or aggregate.
*
* PARAMETERS:
- * pip - pointer to incore inode for the parent inode.
- * dir - TRUE if the new disk inode is for a directory.
- * ip - pointer to a new inode
+ * pip - pointer to incore inode for the parent inode.
+ * dir - 'true' if the new disk inode is for a directory.
+ * ip - pointer to a new inode
*
* RETURN VALUES:
* 0 - success.
* -ENOSPC - insufficient disk resources.
- * -EIO - i/o error.
+ * -EIO - i/o error.
*/
-int diAlloc(struct inode *pip, boolean_t dir, struct inode *ip)
+int diAlloc(struct inode *pip, bool dir, struct inode *ip)
{
int rc, ino, iagno, addext, extno, bitno, sword;
int nwords, rem, i, agno;
JFS_IP(ip)->ipimap = ipimap;
JFS_IP(ip)->fileset = FILESYSTEM_I;
- /* for a directory, the allocation policy is to start
+ /* for a directory, the allocation policy is to start
* at the ag level using the preferred ag.
*/
- if (dir == TRUE) {
+ if (dir) {
agno = dbNextAG(JFS_SBI(pip->i_sb)->ipbmap);
AG_LOCK(imap, agno);
goto tryag;
/*
* try to allocate from the IAG
*/
- /* check if the inode may be allocated from the iag
+ /* check if the inode may be allocated from the iag
* (i.e. the inode has free inodes or new extent can be added).
*/
if (iagp->nfreeinos || addext) {
* hint or, if appropriate (i.e. addext is true), allocate
* an extent of free inodes at or following the extent
* containing the hint.
- *
+ *
* the free inode and free extent summary maps are used
* here, so determine the starting summary map position
* and the number of words we'll have to examine. again,
* inodes should be added for the allocation group, with
* the current request satisfied from this extent. if this
* is the case, an attempt will be made to do just that. if
- * this attempt fails or it has been determined that a new
+ * this attempt fails or it has been determined that a new
* extent should not be added, an attempt is made to satisfy
* the request by allocating an existing (backed) free inode
* from the allocation group.
* PRE CONDITION: Already have the AG lock for this AG.
*
* PARAMETERS:
- * imap - pointer to inode map control structure.
- * agno - allocation group to allocate from.
- * dir - TRUE if the new disk inode is for a directory.
- * ip - pointer to the new inode to be filled in on successful return
+ * imap - pointer to inode map control structure.
+ * agno - allocation group to allocate from.
+ * dir - 'true' if the new disk inode is for a directory.
+ * ip - pointer to the new inode to be filled in on successful return
* with the disk inode number allocated, its extent address
* and the start of the ag.
*
* RETURN VALUES:
* 0 - success.
* -ENOSPC - insufficient disk resources.
- * -EIO - i/o error.
+ * -EIO - i/o error.
*/
static int
-diAllocAG(struct inomap * imap, int agno, boolean_t dir, struct inode *ip)
+diAllocAG(struct inomap * imap, int agno, bool dir, struct inode *ip)
{
int rc, addext, numfree, numinos;
- /* get the number of free and the number of backed disk
+ /* get the number of free and the number of backed disk
* inodes currently within the ag.
*/
numfree = imap->im_agctl[agno].numfree;
* if there are a small number of free inodes or number of free
* inodes is a small percentage of the number of backed inodes.
*/
- if (dir == TRUE)
+ if (dir)
addext = (numfree < 64 ||
(numfree < 256
&& ((numfree * 100) / numinos) <= 20));
* specified primary group.
*
* PARAMETERS:
- * imap - pointer to inode map control structure.
- * agno - primary allocation group (to avoid).
- * dir - TRUE if the new disk inode is for a directory.
- * ip - pointer to a new inode to be filled in on successful return
+ * imap - pointer to inode map control structure.
+ * agno - primary allocation group (to avoid).
+ * dir - 'true' if the new disk inode is for a directory.
+ * ip - pointer to a new inode to be filled in on successful return
* with the disk inode number allocated, its extent address
* and the start of the ag.
*
* RETURN VALUES:
* 0 - success.
* -ENOSPC - insufficient disk resources.
- * -EIO - i/o error.
+ * -EIO - i/o error.
*/
static int
-diAllocAny(struct inomap * imap, int agno, boolean_t dir, struct inode *ip)
+diAllocAny(struct inomap * imap, int agno, bool dir, struct inode *ip)
{
int ag, rc;
int maxag = JFS_SBI(imap->im_ipimap->i_sb)->bmap->db_maxag;
- /* try to allocate from the ags following agno up to
+ /* try to allocate from the ags following agno up to
* the maximum ag number.
*/
for (ag = agno + 1; ag <= maxag; ag++) {
*
* allocation occurs from the first iag on the list using
* the iag's free inode summary map to find the leftmost
- * free inode in the iag.
- *
+ * free inode in the iag.
+ *
* PRE CONDITION: Already have AG lock for this AG.
- *
+ *
* PARAMETERS:
- * imap - pointer to inode map control structure.
- * agno - allocation group.
- * ip - pointer to new inode to be filled in on successful return
+ * imap - pointer to inode map control structure.
+ * agno - allocation group.
+ * ip - pointer to new inode to be filled in on successful return
* with the disk inode number allocated, its extent address
* and the start of the ag.
*
* RETURN VALUES:
* 0 - success.
* -ENOSPC - insufficient disk resources.
- * -EIO - i/o error.
+ * -EIO - i/o error.
*/
static int diAllocIno(struct inomap * imap, int agno, struct inode *ip)
{
return -EIO;
}
- /* compute the inode number within the iag.
+ /* compute the inode number within the iag.
*/
ino = (extno << L2INOSPEREXT) + rem;
/*
* NAME: diAllocExt(imap,agno,ip)
*
- * FUNCTION: add a new extent of free inodes to an iag, allocating
- * an inode from this extent to satisfy the current allocation
- * request.
- *
+ * FUNCTION: add a new extent of free inodes to an iag, allocating
+ * an inode from this extent to satisfy the current allocation
+ * request.
+ *
* this routine first tries to find an existing iag with free
* extents through the ag free extent list. if list is not
* empty, the head of the list will be selected as the home
* of the new extent of free inodes. otherwise (the list is
* empty), a new iag will be allocated for the ag to contain
* the extent.
- *
+ *
* once an iag has been selected, the free extent summary map
* is used to locate a free extent within the iag and diNewExt()
* is called to initialize the extent, with initialization
* for the purpose of satisfying this request.
*
* PARAMETERS:
- * imap - pointer to inode map control structure.
- * agno - allocation group number.
- * ip - pointer to new inode to be filled in on successful return
+ * imap - pointer to inode map control structure.
+ * agno - allocation group number.
+ * ip - pointer to new inode to be filled in on successful return
* with the disk inode number allocated, its extent address
* and the start of the ag.
*
* RETURN VALUES:
* 0 - success.
* -ENOSPC - insufficient disk resources.
- * -EIO - i/o error.
+ * -EIO - i/o error.
*/
static int diAllocExt(struct inomap * imap, int agno, struct inode *ip)
{
/*
* NAME: diAllocBit(imap,iagp,ino)
*
- * FUNCTION: allocate a backed inode from an iag.
+ * FUNCTION: allocate a backed inode from an iag.
*
* this routine performs the mechanics of allocating a
* specified inode from a backed extent.
* in the face of updates to multiple buffers. under this
* approach, all required buffers are obtained before making
* any updates and are held all are updates are complete.
- *
+ *
* PRE CONDITION: Already have buffer lock on iagp. Already have AG lock on
* this AG. Must have read lock on imap inode.
*
* PARAMETERS:
- * imap - pointer to inode map control structure.
- * iagp - pointer to iag.
- * ino - inode number to be allocated within the iag.
+ * imap - pointer to inode map control structure.
+ * iagp - pointer to iag.
+ * ino - inode number to be allocated within the iag.
*
* RETURN VALUES:
* 0 - success.
* -ENOSPC - insufficient disk resources.
- * -EIO - i/o error.
+ * -EIO - i/o error.
*/
static int diAllocBit(struct inomap * imap, struct iag * iagp, int ino)
{
int extno, bitno, agno, sword, rc;
struct metapage *amp = NULL, *bmp = NULL;
- struct iag *aiagp = 0, *biagp = 0;
+ struct iag *aiagp = NULL, *biagp = NULL;
u32 mask;
/* check if this is the last free inode within the iag.
* allocated. if so, update the free inode summary
* map to reflect this.
*/
- if (iagp->wmap[extno] == ONES) {
+ if (iagp->wmap[extno] == cpu_to_le32(ONES)) {
sword = extno >> L2EXTSPERSUM;
bitno = extno & (EXTSPERSUM - 1);
iagp->inosmap[sword] |= cpu_to_le32(HIGHORDER >> bitno);
imap->im_agctl[agno].inofree =
le32_to_cpu(iagp->inofreefwd);
}
- iagp->inofreefwd = iagp->inofreeback = -1;
+ iagp->inofreefwd = iagp->inofreeback = cpu_to_le32(-1);
}
/* update the free inode count at the iag, ag, inode
* buffers. under this approach, all required buffers are
* obtained before making any updates and are held until all
* updates are complete.
- *
+ *
* PRE CONDITION: Already have buffer lock on iagp. Already have AG lock on
* this AG. Must have read lock on imap inode.
*
* PARAMETERS:
- * imap - pointer to inode map control structure.
- * iagp - pointer to iag.
- * extno - extent number.
+ * imap - pointer to inode map control structure.
+ * iagp - pointer to iag.
+ * extno - extent number.
*
* RETURN VALUES:
* 0 - success.
* -ENOSPC - insufficient disk resources.
- * -EIO - i/o error.
+ * -EIO - i/o error.
*/
static int diNewExt(struct inomap * imap, struct iag * iagp, int extno)
{
int agno, iagno, fwd, back, freei = 0, sword, rc;
- struct iag *aiagp = 0, *biagp = 0, *ciagp = 0;
+ struct iag *aiagp = NULL, *biagp = NULL, *ciagp = NULL;
struct metapage *amp, *bmp, *cmp, *dmp;
struct inode *ipimap;
s64 blkno, hint;
imap->im_agctl[agno].extfree =
le32_to_cpu(iagp->extfreefwd);
- iagp->extfreefwd = iagp->extfreeback = -1;
+ iagp->extfreefwd = iagp->extfreeback = cpu_to_le32(-1);
} else {
/* if the iag has all free extents (newly allocated iag),
* add the iag to the ag free extent list.
aiagp->extfreeback = cpu_to_le32(iagno);
iagp->extfreefwd = cpu_to_le32(fwd);
- iagp->extfreeback = -1;
+ iagp->extfreeback = cpu_to_le32(-1);
imap->im_agctl[agno].extfree = iagno;
}
}
iagp->inofreefwd =
cpu_to_le32(imap->im_agctl[agno].inofree);
- iagp->inofreeback = -1;
+ iagp->inofreeback = cpu_to_le32(-1);
imap->im_agctl[agno].inofree = iagno;
}
/*
* NAME: diNewIAG(imap,iagnop,agno)
*
- * FUNCTION: allocate a new iag for an allocation group.
- *
- * first tries to allocate the iag from the inode map
- * iagfree list:
- * if the list has free iags, the head of the list is removed
+ * FUNCTION: allocate a new iag for an allocation group.
+ *
+ * first tries to allocate the iag from the inode map
+ * iagfree list:
+ * if the list has free iags, the head of the list is removed
* and returned to satisfy the request.
* if the inode map's iag free list is empty, the inode map
* is extended to hold a new iag. this new iag is initialized
* and returned to satisfy the request.
*
* PARAMETERS:
- * imap - pointer to inode map control structure.
- * iagnop - pointer to an iag number set with the number of the
+ * imap - pointer to inode map control structure.
+ * iagnop - pointer to an iag number set with the number of the
* newly allocated iag upon successful return.
- * agno - allocation group number.
+ * agno - allocation group number.
* bpp - Buffer pointer to be filled in with new IAG's buffer
*
* RETURN VALUES:
* 0 - success.
* -ENOSPC - insufficient disk resources.
- * -EIO - i/o error.
+ * -EIO - i/o error.
*
- * serialization:
+ * serialization:
* AG lock held on entry/exit;
* write lock on the map is held inside;
* read lock on the map is held on successful completion;
*
- * note: new iag transaction:
+ * note: new iag transaction:
* . synchronously write iag;
* . write log of xtree and inode of imap;
* . commit;
/* acquire the free iag lock */
IAGFREE_LOCK(imap);
- /* if there are any iags on the inode map free iag list,
+ /* if there are any iags on the inode map free iag list,
* allocate the iag from the head of the list.
*/
if (imap->im_freeiag >= 0) {
goto out;
}
- /* assign a buffer for the page */
- mp = get_metapage(ipimap, xaddr, PSIZE, 1);
- if (!mp) {
+ /*
+ * start transaction of update of the inode map
+ * addressing structure pointing to the new iag page;
+ */
+ tid = txBegin(sb, COMMIT_FORCE);
+ mutex_lock(&JFS_IP(ipimap)->commit_mutex);
+
+ /* update the inode map addressing structure to point to it */
+ if ((rc =
+ xtInsert(tid, ipimap, 0, blkno, xlen, &xaddr, 0))) {
+ txEnd(tid);
+ mutex_unlock(&JFS_IP(ipimap)->commit_mutex);
/* Free the blocks allocated for the iag since it was
* not successfully added to the inode map
*/
/* release the inode map lock */
IWRITE_UNLOCK(ipimap);
+ goto out;
+ }
+
+ /* update the inode map's inode to reflect the extension */
+ ipimap->i_size += PSIZE;
+ inode_add_bytes(ipimap, PSIZE);
+
+ /* assign a buffer for the page */
+ mp = get_metapage(ipimap, blkno, PSIZE, 0);
+ if (!mp) {
+ /*
+ * This is very unlikely since we just created the
+ * extent, but let's try to handle it correctly
+ */
+ xtTruncate(tid, ipimap, ipimap->i_size - PSIZE,
+ COMMIT_PWMAP);
+
+ txAbort(tid, 0);
+ txEnd(tid);
+
+ /* release the inode map lock */
+ IWRITE_UNLOCK(ipimap);
+
rc = -EIO;
goto out;
}
/* init the iag */
memset(iagp, 0, sizeof(struct iag));
iagp->iagnum = cpu_to_le32(iagno);
- iagp->inofreefwd = iagp->inofreeback = -1;
- iagp->extfreefwd = iagp->extfreeback = -1;
- iagp->iagfree = -1;
+ iagp->inofreefwd = iagp->inofreeback = cpu_to_le32(-1);
+ iagp->extfreefwd = iagp->extfreeback = cpu_to_le32(-1);
+ iagp->iagfree = cpu_to_le32(-1);
iagp->nfreeinos = 0;
iagp->nfreeexts = cpu_to_le32(EXTSPERIAG);
* summary map initialization handled by bzero).
*/
for (i = 0; i < SMAPSZ; i++)
- iagp->inosmap[i] = ONES;
-
- flush_metapage(mp);
-#ifdef _STILL_TO_PORT
- /* synchronously write the iag page */
- if (bmWrite(bp)) {
- /* Free the blocks allocated for the iag since it was
- * not successfully added to the inode map
- */
- dbFree(ipimap, xaddr, (s64) xlen);
-
- /* release the inode map lock */
- IWRITE_UNLOCK(ipimap);
-
- rc = -EIO;
- goto out;
- }
-
- /* Now the iag is on disk */
+ iagp->inosmap[i] = cpu_to_le32(ONES);
/*
- * start tyransaction of update of the inode map
- * addressing structure pointing to the new iag page;
+ * Write and sync the metapage
*/
-#endif /* _STILL_TO_PORT */
- tid = txBegin(sb, COMMIT_FORCE);
-
- /* update the inode map addressing structure to point to it */
- if ((rc =
- xtInsert(tid, ipimap, 0, blkno, xlen, &xaddr, 0))) {
- /* Free the blocks allocated for the iag since it was
- * not successfully added to the inode map
- */
- dbFree(ipimap, xaddr, (s64) xlen);
-
- /* release the inode map lock */
- IWRITE_UNLOCK(ipimap);
-
- goto out;
- }
-
- /* update the inode map's inode to reflect the extension */
- ipimap->i_size += PSIZE;
- ipimap->i_blocks += LBLK2PBLK(sb, xlen);
+ flush_metapage(mp);
/*
- * txCommit(COMMIT_FORCE) will synchronously write address
- * index pages and inode after commit in careful update order
+ * txCommit(COMMIT_FORCE) will synchronously write address
+ * index pages and inode after commit in careful update order
* of address index pages (right to left, bottom up);
*/
iplist[0] = ipimap;
rc = txCommit(tid, 1, &iplist[0], COMMIT_FORCE);
txEnd(tid);
+ mutex_unlock(&JFS_IP(ipimap)->commit_mutex);
duplicateIXtree(sb, blkno, xlen, &xaddr);
/* remove the iag from the iag free list */
imap->im_freeiag = le32_to_cpu(iagp->iagfree);
- iagp->iagfree = -1;
+ iagp->iagfree = cpu_to_le32(-1);
/* set the return iag number and buffer pointer */
*iagnop = iagno;
*
* FUNCTION: get the buffer for the specified iag within a fileset
* or aggregate inode map.
- *
+ *
* PARAMETERS:
- * imap - pointer to inode map control structure.
- * iagno - iag number.
- * bpp - point to buffer pointer to be filled in on successful
+ * imap - pointer to inode map control structure.
+ * iagno - iag number.
+ * bpp - point to buffer pointer to be filled in on successful
* exit.
*
* SERIALIZATION:
*
* RETURN VALUES:
* 0 - success.
- * -EIO - i/o error.
+ * -EIO - i/o error.
*/
static int diIAGRead(struct inomap * imap, int iagno, struct metapage ** mpp)
{
* the specified bit position.
*
* PARAMETERS:
- * word - word to be examined.
- * start - starting bit position.
+ * word - word to be examined.
+ * start - starting bit position.
*
* RETURN VALUES:
* bit position of first free bit in the word or 32 if
/*
* NAME: diUpdatePMap()
- *
- * FUNCTION: Update the persistent map in an IAG for the allocation or
+ *
+ * FUNCTION: Update the persistent map in an IAG for the allocation or
* freeing of the specified inode.
- *
+ *
* PRE CONDITIONS: Working map has already been updated for allocate.
*
* PARAMETERS:
* ipimap - Incore inode map inode
* inum - Number of inode to mark in permanent map
- * is_free - If TRUE indicates inode should be marked freed, otherwise
+ * is_free - If 'true' indicates inode should be marked freed, otherwise
* indicates inode should be marked allocated.
*
- * RETURN VALUES:
+ * RETURN VALUES:
* 0 for success
*/
int
diUpdatePMap(struct inode *ipimap,
- unsigned long inum, boolean_t is_free, struct tblock * tblk)
+ unsigned long inum, bool is_free, struct tblock * tblk)
{
int rc;
struct iag *iagp;
u32 mask;
struct jfs_log *log;
int lsn, difft, diffp;
+ unsigned long flags;
imap = JFS_IP(ipimap)->i_imap;
/* get the iag number containing the inode */
IREAD_UNLOCK(ipimap);
if (rc)
return (rc);
+ metapage_wait_for_io(mp);
iagp = (struct iag *) mp->data;
/* get the inode number and extent number of the inode within
* the iag and the inode number within the extent.
extno = ino >> L2INOSPEREXT;
bitno = ino & (INOSPEREXT - 1);
mask = HIGHORDER >> bitno;
- /*
+ /*
* mark the inode free in persistent map:
*/
- if (is_free == TRUE) {
+ if (is_free) {
/* The inode should have been allocated both in working
* map and in persistent map;
* the inode will be freed from working map at the release
* of last reference release;
*/
if (!(le32_to_cpu(iagp->wmap[extno]) & mask)) {
- jfs_error(ipimap->i_sb,
+ jfs_error(ipimap->i_sb,
"diUpdatePMap: inode %ld not marked as "
"allocated in wmap!", inum);
}
*/
lsn = tblk->lsn;
log = JFS_SBI(tblk->sb)->log;
+ LOGSYNC_LOCK(log, flags);
if (mp->lsn != 0) {
/* inherit older/smaller lsn */
logdiff(difft, lsn, log);
if (difft < diffp) {
mp->lsn = lsn;
/* move mp after tblock in logsync list */
- LOGSYNC_LOCK(log);
list_move(&mp->synclist, &tblk->synclist);
- LOGSYNC_UNLOCK(log);
}
/* inherit younger/larger clsn */
- LOGSYNC_LOCK(log);
assert(mp->clsn);
logdiff(difft, tblk->clsn, log);
logdiff(diffp, mp->clsn, log);
if (difft > diffp)
mp->clsn = tblk->clsn;
- LOGSYNC_UNLOCK(log);
} else {
mp->log = log;
mp->lsn = lsn;
/* insert mp after tblock in logsync list */
- LOGSYNC_LOCK(log);
log->count++;
list_add(&mp->synclist, &tblk->synclist);
mp->clsn = tblk->clsn;
- LOGSYNC_UNLOCK(log);
}
+ LOGSYNC_UNLOCK(log, flags);
write_metapage(mp);
return (0);
}
* diExtendFS()
*
* function: update imap for extendfs();
- *
- * note: AG size has been increased s.t. each k old contiguous AGs are
+ *
+ * note: AG size has been increased s.t. each k old contiguous AGs are
* coalesced into a new AG;
*/
int diExtendFS(struct inode *ipimap, struct inode *ipbmap)
{
int rc, rcx = 0;
struct inomap *imap = JFS_IP(ipimap)->i_imap;
- struct iag *iagp = 0, *hiagp = 0;
+ struct iag *iagp = NULL, *hiagp = NULL;
struct bmap *mp = JFS_SBI(ipbmap->i_sb)->bmap;
struct metapage *bp, *hbp;
int i, n, head;
atomic_read(&imap->im_numfree));
/*
- * reconstruct imap
+ * reconstruct imap
*
* coalesce contiguous k (newAGSize/oldAGSize) AGs;
* i.e., (AGi, ..., AGj) where i = k*n and j = k*(n+1) - 1 to AGn;
/* init per AG control information im_agctl[] */
for (i = 0; i < MAXAG; i++) {
- imap->im_agctl[i].inofree = -1; /* free inode list */
- imap->im_agctl[i].extfree = -1; /* free extent list */
+ imap->im_agctl[i].inofree = -1;
+ imap->im_agctl[i].extfree = -1;
imap->im_agctl[i].numinos = 0; /* number of backed inodes */
imap->im_agctl[i].numfree = 0; /* number of free backed inodes */
}
}
/* leave free iag in the free iag list */
- if (iagp->nfreeexts == cpu_to_le32(EXTSPERIAG)) {
+ if (iagp->nfreeexts == cpu_to_le32(EXTSPERIAG)) {
release_metapage(bp);
continue;
}
/* if any backed free inodes, insert at AG free inode list */
if ((int) le32_to_cpu(iagp->nfreeinos) > 0) {
- if ((head = imap->im_agctl[n].inofree) == -1)
- iagp->inofreefwd = iagp->inofreeback = -1;
- else {
+ if ((head = imap->im_agctl[n].inofree) == -1) {
+ iagp->inofreefwd = cpu_to_le32(-1);
+ iagp->inofreeback = cpu_to_le32(-1);
+ } else {
if ((rc = diIAGRead(imap, head, &hbp))) {
rcx = rc;
goto nextiag;
}
hiagp = (struct iag *) hbp->data;
- hiagp->inofreeback =
- le32_to_cpu(iagp->iagnum);
+ hiagp->inofreeback = iagp->iagnum;
iagp->inofreefwd = cpu_to_le32(head);
- iagp->inofreeback = -1;
+ iagp->inofreeback = cpu_to_le32(-1);
write_metapage(hbp);
}
/* if any free extents, insert at AG free extent list */
if (le32_to_cpu(iagp->nfreeexts) > 0) {
- if ((head = imap->im_agctl[n].extfree) == -1)
- iagp->extfreefwd = iagp->extfreeback = -1;
- else {
+ if ((head = imap->im_agctl[n].extfree) == -1) {
+ iagp->extfreefwd = cpu_to_le32(-1);
+ iagp->extfreeback = cpu_to_le32(-1);
+ } else {
if ((rc = diIAGRead(imap, head, &hbp))) {
rcx = rc;
goto nextiag;
hiagp = (struct iag *) hbp->data;
hiagp->extfreeback = iagp->iagnum;
iagp->extfreefwd = cpu_to_le32(head);
- iagp->extfreeback = -1;
+ iagp->extfreeback = cpu_to_le32(-1);
write_metapage(hbp);
}
if (readSuper(sb, &bh))
return;
j_sb = (struct jfs_superblock *)bh->b_data;
- j_sb->s_flag |= JFS_BAD_SAIT;
+ j_sb->s_flag |= cpu_to_le32(JFS_BAD_SAIT);
mark_buffer_dirty(bh);
sync_dirty_buffer(bh);
}
/* update the inode map's inode to reflect the extension */
ip->i_size += PSIZE;
- ip->i_blocks += LBLK2PBLK(sb, xlen);
+ inode_add_bytes(ip, PSIZE);
txCommit(tid, 1, &ip, COMMIT_FORCE);
cleanup:
txEnd(tid);
static int copy_from_dinode(struct dinode * dip, struct inode *ip)
{
struct jfs_inode_info *jfs_ip = JFS_IP(ip);
+ struct jfs_sb_info *sbi = JFS_SBI(ip->i_sb);
uid_t uid;
gid_t gid;
jfs_ip->mode2 = le32_to_cpu(dip->di_mode);
ip->i_mode = le32_to_cpu(dip->di_mode) & 0xffff;
+ if (sbi->umask != -1) {
+ ip->i_mode = (ip->i_mode & ~0777) | (0777 & ~sbi->umask);
+ /* For directories, add x permission if r is allowed by umask */
+ if (S_ISDIR(ip->i_mode)) {
+ if (ip->i_mode & 0400)
+ ip->i_mode |= 0100;
+ if (ip->i_mode & 0040)
+ ip->i_mode |= 0010;
+ if (ip->i_mode & 0004)
+ ip->i_mode |= 0001;
+ }
+ }
ip->i_nlink = le32_to_cpu(dip->di_nlink);
uid = le32_to_cpu(dip->di_uid);
gid = le32_to_cpu(dip->di_gid);
- ip->i_uid = INOXID_UID(uid, gid);
- ip->i_gid = INOXID_GID(uid, gid);
- ip->i_xid = INOXID_XID(uid, gid, 0);
-
+ ip->i_tag = INOTAG_TAG(DX_TAG(ip), uid, gid, 0);
+
+ jfs_ip->saved_uid = INOTAG_UID(DX_TAG(ip), uid, gid);
+ if (sbi->uid == -1)
+ ip->i_uid = jfs_ip->saved_uid;
+ else {
+ ip->i_uid = sbi->uid;
+ }
+
+ jfs_ip->saved_gid = INOTAG_GID(DX_TAG(ip), uid, gid);
+ if (sbi->gid == -1)
+ ip->i_gid = jfs_ip->saved_gid;
+ else {
+ ip->i_gid = sbi->gid;
+ }
+
ip->i_size = le64_to_cpu(dip->di_size);
ip->i_atime.tv_sec = le32_to_cpu(dip->di_atime.tv_sec);
ip->i_atime.tv_nsec = le32_to_cpu(dip->di_atime.tv_nsec);
ip->i_mtime.tv_nsec = le32_to_cpu(dip->di_mtime.tv_nsec);
ip->i_ctime.tv_sec = le32_to_cpu(dip->di_ctime.tv_sec);
ip->i_ctime.tv_nsec = le32_to_cpu(dip->di_ctime.tv_nsec);
- ip->i_blksize = ip->i_sb->s_blocksize;
ip->i_blocks = LBLK2PBLK(ip->i_sb, le64_to_cpu(dip->di_nblocks));
ip->i_generation = le32_to_cpu(dip->di_gen);
static void copy_to_dinode(struct dinode * dip, struct inode *ip)
{
struct jfs_inode_info *jfs_ip = JFS_IP(ip);
- uid_t uid;
- gid_t gid;
+ struct jfs_sb_info *sbi = JFS_SBI(ip->i_sb);
dip->di_fileset = cpu_to_le32(jfs_ip->fileset);
- dip->di_inostamp = cpu_to_le32(JFS_SBI(ip->i_sb)->inostamp);
+ dip->di_inostamp = cpu_to_le32(sbi->inostamp);
dip->di_number = cpu_to_le32(ip->i_ino);
dip->di_gen = cpu_to_le32(ip->i_generation);
dip->di_size = cpu_to_le64(ip->i_size);
dip->di_nblocks = cpu_to_le64(PBLK2LBLK(ip->i_sb, ip->i_blocks));
dip->di_nlink = cpu_to_le32(ip->i_nlink);
- uid = XIDINO_UID(ip->i_uid, ip->i_xid);
- gid = XIDINO_GID(ip->i_gid, ip->i_xid);
- dip->di_uid = cpu_to_le32(uid);
- dip->di_gid = cpu_to_le32(gid);
+ dip->di_uid = cpu_to_le32(TAGINO_UID(DX_TAG(ip),
+ (sbi->uid == -1) ? ip->i_uid : jfs_ip->saved_uid, ip->i_tag));
+ dip->di_gid = cpu_to_le32(TAGINO_GID(DX_TAG(ip),
+ (sbi->gid == -1) ? ip->i_gid : jfs_ip->saved_gid, ip->i_tag));
+
/*
* mode2 is only needed for storing the higher order bits.
* Trust i_mode for the lower order ones
*/
- dip->di_mode = cpu_to_le32((jfs_ip->mode2 & 0xffff0000) | ip->i_mode);
+ if (sbi->umask == -1)
+ dip->di_mode = cpu_to_le32((jfs_ip->mode2 & 0xffff0000) |
+ ip->i_mode);
+ else /* Leave the original permissions alone */
+ dip->di_mode = cpu_to_le32(jfs_ip->mode2);
+
dip->di_atime.tv_sec = cpu_to_le32(ip->i_atime.tv_sec);
dip->di_atime.tv_nsec = cpu_to_le32(ip->i_atime.tv_nsec);
dip->di_ctime.tv_sec = cpu_to_le32(ip->i_ctime.tv_sec);
if (S_ISCHR(ip->i_mode) || S_ISBLK(ip->i_mode))
dip->di_rdev = cpu_to_le32(jfs_ip->dev);
}
-
-#ifdef _JFS_DEBUG_IMAP
-/*
- * DBGdiInit()
- */
-static void *DBGdiInit(struct inomap * imap)
-{
- u32 *dimap;
- int size;
- size = 64 * 1024;
- if ((dimap = (u32 *) xmalloc(size, L2PSIZE, kernel_heap)) == NULL)
- assert(0);
- bzero((void *) dimap, size);
- imap->im_DBGdimap = dimap;
-}
-
-/*
- * DBGdiAlloc()
- */
-static void DBGdiAlloc(struct inomap * imap, ino_t ino)
-{
- u32 *dimap = imap->im_DBGdimap;
- int w, b;
- u32 m;
- w = ino >> 5;
- b = ino & 31;
- m = 0x80000000 >> b;
- assert(w < 64 * 256);
- if (dimap[w] & m) {
- printk("DEBUG diAlloc: duplicate alloc ino:0x%x\n", ino);
- }
- dimap[w] |= m;
-}
-
-/*
- * DBGdiFree()
- */
-static void DBGdiFree(struct inomap * imap, ino_t ino)
-{
- u32 *dimap = imap->im_DBGdimap;
- int w, b;
- u32 m;
- w = ino >> 5;
- b = ino & 31;
- m = 0x80000000 >> b;
- assert(w < 64 * 256);
- if ((dimap[w] & m) == 0) {
- printk("DEBUG diFree: duplicate free ino:0x%x\n", ino);
- }
- dimap[w] &= ~m;
-}
-
-static void dump_cp(struct inomap * ipimap, char *function, int line)
-{
- printk("\n* ********* *\nControl Page %s %d\n", function, line);
- printk("FreeIAG %d\tNextIAG %d\n", ipimap->im_freeiag,
- ipimap->im_nextiag);
- printk("NumInos %d\tNumFree %d\n",
- atomic_read(&ipimap->im_numinos),
- atomic_read(&ipimap->im_numfree));
- printk("AG InoFree %d\tAG ExtFree %d\n",
- ipimap->im_agctl[0].inofree, ipimap->im_agctl[0].extfree);
- printk("AG NumInos %d\tAG NumFree %d\n",
- ipimap->im_agctl[0].numinos, ipimap->im_agctl[0].numfree);
-}
-
-static void dump_iag(struct iag * iag, char *function, int line)
-{
- printk("\n* ********* *\nIAG %s %d\n", function, line);
- printk("IagNum %d\tIAG Free %d\n", le32_to_cpu(iag->iagnum),
- le32_to_cpu(iag->iagfree));
- printk("InoFreeFwd %d\tInoFreeBack %d\n",
- le32_to_cpu(iag->inofreefwd),
- le32_to_cpu(iag->inofreeback));
- printk("ExtFreeFwd %d\tExtFreeBack %d\n",
- le32_to_cpu(iag->extfreefwd),
- le32_to_cpu(iag->extfreeback));
- printk("NFreeInos %d\tNFreeExts %d\n", le32_to_cpu(iag->nfreeinos),
- le32_to_cpu(iag->nfreeexts));
-}
-#endif /* _JFS_DEBUG_IMAP */
git://git.onelab.eu / linux-2.6.git / blobdiff