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JFS: White space cleanup

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Removed trailing spaces & tabs, and spaces preceding tabs.
Also a couple very minor comment cleanups.

Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
(cherry picked from f74156539964d7b3d5164fdf8848e6a682f75b97 commit)
This commit is contained in:
Dave Kleikamp
2006-10-02 09:55:27 -05:00
parent 087387f90f
commit 63f83c9fcf
41 changed files with 509 additions and 511 deletions
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222
fs/jfs/jfs_imap.c
View File

@@ -3,16 +3,16 @@
*
* 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
*/
@@ -98,7 +98,7 @@ static void copy_to_dinode(struct dinode *, struct inode *);
* 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:
@@ -107,7 +107,7 @@ static void copy_to_dinode(struct dinode *, struct inode *);
* RETURN VALUES:
* 0 - success
* -ENOMEM - insufficient free virtual memory.
* -EIO - i/o error.
* -EIO - i/o error.
*/
int diMount(struct inode *ipimap)
{
@@ -191,7 +191,7 @@ int diMount(struct inode *ipimap)
* RETURN VALUES:
* 0 - success
* -ENOMEM - insufficient free virtual memory.
* -EIO - i/o error.
* -EIO - i/o error.
*/
int diUnmount(struct inode *ipimap, int mounterror)
{
@@ -281,7 +281,7 @@ int diSync(struct inode *ipimap)
* 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
@@ -289,7 +289,7 @@ int diSync(struct inode *ipimap)
* 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
@@ -302,9 +302,9 @@ int diSync(struct inode *ipimap)
*
* RETURN VALUES:
* 0 - success
* -EIO - i/o error.
* -EIO - i/o error.
* -ENOMEM - insufficient memory
*
*
*/
int diRead(struct inode *ip)
{
@@ -586,14 +586,14 @@ void diFreeSpecial(struct inode *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)
{
@@ -676,11 +676,11 @@ int diWrite(tid_t tid, struct inode *ip)
* 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;
*/
@@ -824,7 +824,7 @@ int diWrite(tid_t tid, struct inode *ip)
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);
@@ -842,7 +842,7 @@ int diWrite(tid_t tid, struct inode *ip)
* 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
@@ -865,11 +865,11 @@ int diWrite(tid_t tid, struct inode *ip)
* 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)
{
@@ -898,7 +898,7 @@ 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) {
@@ -1013,7 +1013,7 @@ int diFree(struct inode *ip)
/* 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] == cpu_to_le32(ONES)) {
@@ -1204,9 +1204,9 @@ int diFree(struct inode *ip)
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) {
@@ -1218,7 +1218,7 @@ int diFree(struct inode *ip)
/* 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;
@@ -1255,17 +1255,17 @@ int diFree(struct inode *ip)
* 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;
@@ -1284,8 +1284,8 @@ int diFree(struct inode *ip)
* 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;
@@ -1340,18 +1340,18 @@ diInitInode(struct inode *ip, int iagno, int ino, int extno, struct iag * iagp)
/*
* 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, bool dir, struct inode *ip)
{
@@ -1372,7 +1372,7 @@ int diAlloc(struct inode *pip, bool dir, struct inode *ip)
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) {
@@ -1435,7 +1435,7 @@ int diAlloc(struct inode *pip, bool dir, struct inode *ip)
/*
* 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) {
@@ -1490,7 +1490,7 @@ int diAlloc(struct inode *pip, bool dir, struct inode *ip)
* 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,
@@ -1641,7 +1641,7 @@ int diAlloc(struct inode *pip, bool dir, struct inode *ip)
* 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.
@@ -1649,24 +1649,24 @@ int diAlloc(struct inode *pip, bool dir, struct inode *ip)
* 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, 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;
@@ -1719,17 +1719,17 @@ diAllocAG(struct inomap * imap, int agno, bool dir, struct inode *ip)
* 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, bool dir, struct inode *ip)
@@ -1738,7 +1738,7 @@ diAllocAny(struct inomap * imap, int agno, bool dir, struct inode *ip)
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++) {
@@ -1780,21 +1780,21 @@ diAllocAny(struct inomap * imap, int agno, bool dir, struct inode *ip)
*
* 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)
{
@@ -1867,7 +1867,7 @@ 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;
@@ -1892,17 +1892,17 @@ static int diAllocIno(struct inomap * imap, int agno, struct inode *ip)
/*
* 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
@@ -1910,16 +1910,16 @@ static int diAllocIno(struct inomap * imap, int agno, struct inode *ip)
* 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)
{
@@ -2012,7 +2012,7 @@ 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.
@@ -2025,19 +2025,19 @@ static int diAllocExt(struct inomap * imap, int agno, struct inode *ip)
* 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)
{
@@ -2172,19 +2172,19 @@ static int diAllocBit(struct inomap * imap, struct iag * iagp, int ino)
* 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)
{
@@ -2432,34 +2432,34 @@ static int diNewExt(struct inomap * imap, struct iag * iagp, int extno)
/*
* 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;
@@ -2494,7 +2494,7 @@ diNewIAG(struct inomap * imap, int *iagnop, int agno, struct metapage ** mpp)
/* 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) {
@@ -2618,8 +2618,8 @@ diNewIAG(struct inomap * imap, int *iagnop, int agno, struct metapage ** mpp)
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;
@@ -2678,11 +2678,11 @@ diNewIAG(struct inomap * imap, int *iagnop, int agno, struct metapage ** mpp)
*
* 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:
@@ -2692,7 +2692,7 @@ diNewIAG(struct inomap * imap, int *iagnop, int agno, struct metapage ** mpp)
*
* RETURN VALUES:
* 0 - success.
* -EIO - i/o error.
* -EIO - i/o error.
*/
static int diIAGRead(struct inomap * imap, int iagno, struct metapage ** mpp)
{
@@ -2718,8 +2718,8 @@ 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
@@ -2740,10 +2740,10 @@ static int diFindFree(u32 word, int start)
/*
* 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:
@@ -2752,7 +2752,7 @@ static int diFindFree(u32 word, int start)
* 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
@@ -2793,7 +2793,7 @@ diUpdatePMap(struct inode *ipimap,
extno = ino >> L2INOSPEREXT;
bitno = ino & (INOSPEREXT - 1);
mask = HIGHORDER >> bitno;
/*
/*
* mark the inode free in persistent map:
*/
if (is_free) {
@@ -2803,7 +2803,7 @@ diUpdatePMap(struct inode *ipimap,
* 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);
}
@@ -2877,8 +2877,8 @@ diUpdatePMap(struct inode *ipimap,
* 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)
@@ -2897,7 +2897,7 @@ int diExtendFS(struct inode *ipimap, struct inode *ipbmap)
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;
@@ -2931,7 +2931,7 @@ int diExtendFS(struct inode *ipimap, struct inode *ipbmap)
}
/* 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;
}