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Commit f6f0a6d6 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw 

* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: (22 commits)
  GFS2: fixed typo
  GFS2: Fix type mapping for demote_rq interface
  GFS2 fatal: filesystem consistency error on rename
  GFS2: Improve journal allocation via sysfs
  GFS2: Add "norecovery" mount option as a synonym for "spectator"
  GFS2: Fix spectator umount issue
  GFS2: Fix compiler warning from previous patch
  GFS2: reserve more blocks for transactions
  GFS2: Fix journal check for spectator mounts
  GFS2: Remove upgrade mount option
  GFS2: Remove localcaching mount option
  GFS2: Remove ignore_local_fs mount argument
  GFS2: Make . and .. qstrs constant
  GFS2: Use new workqueue scheme
  GFS2: Update handling of DLM return codes to match reality
  GFS2: Don't enforce min hold time when two demotes occur in rapid succession
  GFS2: Fix whitespace in previous patch
  GFS2: fallocate support
  GFS2: Add a bug trap in allocation code
  GFS2: No longer experimental
  ...
parents 2017bd19 33027af6

fs/gfs2/Kconfig

+1 −1
Original line number Diff line number Diff line 
config GFS2_FS

	tristate "GFS2 file system support"

	depends on EXPERIMENTAL && (64BIT || LBDAF)

	depends on (64BIT || LBDAF)

	select DLM if GFS2_FS_LOCKING_DLM

	select CONFIGFS_FS if GFS2_FS_LOCKING_DLM

	select SYSFS if GFS2_FS_LOCKING_DLM

fs/gfs2/aops.c

+10 −14
Original line number Diff line number Diff line
@@ -36,7 +36,7 @@ 
#include "glops.h"





static void gfs2_page_add_databufs(struct gfs2_inode *ip, struct page *page,

void gfs2_page_add_databufs(struct gfs2_inode *ip, struct page *page,

			    unsigned int from, unsigned int to)

{

	struct buffer_head *head = page_buffers(page);
@@ -615,7 +615,7 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping, 
	unsigned int data_blocks = 0, ind_blocks = 0, rblocks;

	int alloc_required;

	int error = 0;

	struct gfs2_alloc *al;

	struct gfs2_alloc *al = NULL;

	pgoff_t index = pos >> PAGE_CACHE_SHIFT;

	unsigned from = pos & (PAGE_CACHE_SIZE - 1);

	unsigned to = from + len;
@@ -663,6 +663,8 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping, 
		rblocks += RES_STATFS + RES_QUOTA;

	if (&ip->i_inode == sdp->sd_rindex)

		rblocks += 2 * RES_STATFS;

	if (alloc_required)

		rblocks += gfs2_rg_blocks(al);



	error = gfs2_trans_begin(sdp, rblocks,

				 PAGE_CACHE_SIZE/sdp->sd_sb.sb_bsize);
@@ -696,13 +698,11 @@ static int gfs2_write_begin(struct file *file, struct address_space *mapping, 


	page_cache_release(page);



	/*

	 * XXX(truncate): the call below should probably be replaced with

	 * a call to the gfs2-specific truncate blocks helper to actually

	 * release disk blocks..

	 */

	gfs2_trans_end(sdp);

	if (pos + len > ip->i_inode.i_size)

		truncate_setsize(&ip->i_inode, ip->i_inode.i_size);

		gfs2_trim_blocks(&ip->i_inode);

	goto out_trans_fail;



out_endtrans:

	gfs2_trans_end(sdp);

out_trans_fail:
@@ -802,10 +802,8 @@ static int gfs2_stuffed_write_end(struct inode *inode, struct buffer_head *dibh, 
	page_cache_release(page);



	if (copied) {

		if (inode->i_size < to) {

		if (inode->i_size < to)

			i_size_write(inode, to);

			ip->i_disksize = inode->i_size;

		}

		gfs2_dinode_out(ip, di);

		mark_inode_dirty(inode);

	}
@@ -876,8 +874,6 @@ static int gfs2_write_end(struct file *file, struct address_space *mapping, 


	ret = generic_write_end(file, mapping, pos, len, copied, page, fsdata);

	if (ret > 0) {

		if (inode->i_size > ip->i_disksize)

			ip->i_disksize = inode->i_size;

		gfs2_dinode_out(ip, dibh->b_data);

		mark_inode_dirty(inode);

	}

fs/gfs2/bmap.c

+122 −133
Original line number Diff line number Diff line
@@ -50,7 +50,7 @@ struct strip_mine { 
 * @ip: the inode

 * @dibh: the dinode buffer

 * @block: the block number that was allocated

 * @private: any locked page held by the caller process

 * @page: The (optional) page. This is looked up if @page is NULL

 *

 * Returns: errno

 */
@@ -109,8 +109,7 @@ static int gfs2_unstuffer_page(struct gfs2_inode *ip, struct buffer_head *dibh, 
/**

 * gfs2_unstuff_dinode - Unstuff a dinode when the data has grown too big

 * @ip: The GFS2 inode to unstuff

 * @unstuffer: the routine that handles unstuffing a non-zero length file

 * @private: private data for the unstuffer

 * @page: The (optional) page. This is looked up if the @page is NULL

 *

 * This routine unstuffs a dinode and returns it to a "normal" state such

 * that the height can be grown in the traditional way.
@@ -132,7 +131,7 @@ int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page) 
	if (error)

		goto out;



	if (ip->i_disksize) {

	if (i_size_read(&ip->i_inode)) {

		/* Get a free block, fill it with the stuffed data,

		   and write it out to disk */
@@ -161,7 +160,7 @@ int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page) 
	di = (struct gfs2_dinode *)dibh->b_data;

	gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));



	if (ip->i_disksize) {

	if (i_size_read(&ip->i_inode)) {

		*(__be64 *)(di + 1) = cpu_to_be64(block);

		gfs2_add_inode_blocks(&ip->i_inode, 1);

		di->di_blocks = cpu_to_be64(gfs2_get_inode_blocks(&ip->i_inode));
@@ -884,84 +883,15 @@ static int do_strip(struct gfs2_inode *ip, struct buffer_head *dibh, 
	return error;

}



/**

 * do_grow - Make a file look bigger than it is

 * @ip: the inode

 * @size: the size to set the file to

 *

 * Called with an exclusive lock on @ip.

 *

 * Returns: errno

 */



static int do_grow(struct gfs2_inode *ip, u64 size)

{

	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);

	struct gfs2_alloc *al;

	struct buffer_head *dibh;

	int error;



	al = gfs2_alloc_get(ip);

	if (!al)

		return -ENOMEM;



	error = gfs2_quota_lock_check(ip);

	if (error)

		goto out;



	al->al_requested = sdp->sd_max_height + RES_DATA;



	error = gfs2_inplace_reserve(ip);

	if (error)

		goto out_gunlock_q;



	error = gfs2_trans_begin(sdp,

			sdp->sd_max_height + al->al_rgd->rd_length +

			RES_JDATA + RES_DINODE + RES_STATFS + RES_QUOTA, 0);

	if (error)

		goto out_ipres;



	error = gfs2_meta_inode_buffer(ip, &dibh);

	if (error)

		goto out_end_trans;



	if (size > sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)) {

		if (gfs2_is_stuffed(ip)) {

			error = gfs2_unstuff_dinode(ip, NULL);

			if (error)

				goto out_brelse;

		}

	}



	ip->i_disksize = size;

	ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;

	gfs2_trans_add_bh(ip->i_gl, dibh, 1);

	gfs2_dinode_out(ip, dibh->b_data);



out_brelse:

	brelse(dibh);

out_end_trans:

	gfs2_trans_end(sdp);

out_ipres:

	gfs2_inplace_release(ip);

out_gunlock_q:

	gfs2_quota_unlock(ip);

out:

	gfs2_alloc_put(ip);

	return error;

}





/**

 * gfs2_block_truncate_page - Deal with zeroing out data for truncate

 *

 * This is partly borrowed from ext3.

 */

static int gfs2_block_truncate_page(struct address_space *mapping)

static int gfs2_block_truncate_page(struct address_space *mapping, loff_t from)

{

	struct inode *inode = mapping->host;

	struct gfs2_inode *ip = GFS2_I(inode);

	loff_t from = inode->i_size;

	unsigned long index = from >> PAGE_CACHE_SHIFT;

	unsigned offset = from & (PAGE_CACHE_SIZE-1);

	unsigned blocksize, iblock, length, pos;
@@ -1023,9 +953,11 @@ static int gfs2_block_truncate_page(struct address_space *mapping) 
	return err;

}



static int trunc_start(struct gfs2_inode *ip, u64 size)

static int trunc_start(struct inode *inode, u64 oldsize, u64 newsize)

{

	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);

	struct gfs2_inode *ip = GFS2_I(inode);

	struct gfs2_sbd *sdp = GFS2_SB(inode);

	struct address_space *mapping = inode->i_mapping;

	struct buffer_head *dibh;

	int journaled = gfs2_is_jdata(ip);

	int error;
@@ -1039,31 +971,26 @@ static int trunc_start(struct gfs2_inode *ip, u64 size) 
	if (error)

		goto out;



	if (gfs2_is_stuffed(ip)) {

		u64 dsize = size + sizeof(struct gfs2_dinode);

		ip->i_disksize = size;

		ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;

	gfs2_trans_add_bh(ip->i_gl, dibh, 1);

		gfs2_dinode_out(ip, dibh->b_data);

		if (dsize > dibh->b_size)

			dsize = dibh->b_size;

		gfs2_buffer_clear_tail(dibh, dsize);

		error = 1;



	if (gfs2_is_stuffed(ip)) {

		gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode) + newsize);

	} else {

		if (size & (u64)(sdp->sd_sb.sb_bsize - 1))

			error = gfs2_block_truncate_page(ip->i_inode.i_mapping);

		if (newsize & (u64)(sdp->sd_sb.sb_bsize - 1)) {

			error = gfs2_block_truncate_page(mapping, newsize);

			if (error)

				goto out_brelse;

		}

		ip->i_diskflags |= GFS2_DIF_TRUNC_IN_PROG;

	}



		if (!error) {

			ip->i_disksize = size;

	i_size_write(inode, newsize);

	ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;

			ip->i_diskflags |= GFS2_DIF_TRUNC_IN_PROG;

			gfs2_trans_add_bh(ip->i_gl, dibh, 1);

	gfs2_dinode_out(ip, dibh->b_data);

		}

	}



	truncate_pagecache(inode, oldsize, newsize);

out_brelse:

	brelse(dibh);



out:

	gfs2_trans_end(sdp);

	return error;
@@ -1123,7 +1050,7 @@ static int trunc_end(struct gfs2_inode *ip) 
	if (error)

		goto out;



	if (!ip->i_disksize) {

	if (!i_size_read(&ip->i_inode)) {

		ip->i_height = 0;

		ip->i_goal = ip->i_no_addr;

		gfs2_buffer_clear_tail(dibh, sizeof(struct gfs2_dinode));
@@ -1143,92 +1070,154 @@ static int trunc_end(struct gfs2_inode *ip) 


/**

 * do_shrink - make a file smaller

 * @ip: the inode

 * @size: the size to make the file

 * @truncator: function to truncate the last partial block

 * @inode: the inode

 * @oldsize: the current inode size

 * @newsize: the size to make the file

 *

 * Called with an exclusive lock on @ip.

 * Called with an exclusive lock on @inode. The @size must

 * be equal to or smaller than the current inode size.

 *

 * Returns: errno

 */



static int do_shrink(struct gfs2_inode *ip, u64 size)

static int do_shrink(struct inode *inode, u64 oldsize, u64 newsize)

{

	struct gfs2_inode *ip = GFS2_I(inode);

	int error;



	error = trunc_start(ip, size);

	error = trunc_start(inode, oldsize, newsize);

	if (error < 0)

		return error;

	if (error > 0)

	if (gfs2_is_stuffed(ip))

		return 0;



	error = trunc_dealloc(ip, size);

	if (!error)

	error = trunc_dealloc(ip, newsize);

	if (error == 0)

		error = trunc_end(ip);



	return error;

}



static int do_touch(struct gfs2_inode *ip, u64 size)

void gfs2_trim_blocks(struct inode *inode)

{

	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);

	u64 size = inode->i_size;

	int ret;



	ret = do_shrink(inode, size, size);

	WARN_ON(ret != 0);

}



/**

 * do_grow - Touch and update inode size

 * @inode: The inode

 * @size: The new size

 *

 * This function updates the timestamps on the inode and

 * may also increase the size of the inode. This function

 * must not be called with @size any smaller than the current

 * inode size.

 *

 * Although it is not strictly required to unstuff files here,

 * earlier versions of GFS2 have a bug in the stuffed file reading

 * code which will result in a buffer overrun if the size is larger

 * than the max stuffed file size. In order to prevent this from

 * occuring, such files are unstuffed, but in other cases we can

 * just update the inode size directly.

 *

 * Returns: 0 on success, or -ve on error

 */



static int do_grow(struct inode *inode, u64 size)

{

	struct gfs2_inode *ip = GFS2_I(inode);

	struct gfs2_sbd *sdp = GFS2_SB(inode);

	struct buffer_head *dibh;

	struct gfs2_alloc *al = NULL;

	int error;



	error = gfs2_trans_begin(sdp, RES_DINODE, 0);

	if (gfs2_is_stuffed(ip) &&

	    (size > (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_dinode)))) {

		al = gfs2_alloc_get(ip);

		if (al == NULL)

			return -ENOMEM;



		error = gfs2_quota_lock_check(ip);

		if (error)

		return error;

			goto do_grow_alloc_put;



	down_write(&ip->i_rw_mutex);

		al->al_requested = 1;

		error = gfs2_inplace_reserve(ip);

		if (error)

			goto do_grow_qunlock;

	}



	error = gfs2_trans_begin(sdp, RES_DINODE + RES_STATFS + RES_RG_BIT, 0);

	if (error)

		goto do_grow_release;



	if (al) {

		error = gfs2_unstuff_dinode(ip, NULL);

		if (error)

			goto do_end_trans;

	}



	error = gfs2_meta_inode_buffer(ip, &dibh);

	if (error)

		goto do_touch_out;

		goto do_end_trans;



	i_size_write(inode, size);

	ip->i_inode.i_mtime = ip->i_inode.i_ctime = CURRENT_TIME;

	gfs2_trans_add_bh(ip->i_gl, dibh, 1);

	gfs2_dinode_out(ip, dibh->b_data);

	brelse(dibh);



do_touch_out:

	up_write(&ip->i_rw_mutex);

do_end_trans:

	gfs2_trans_end(sdp);

do_grow_release:

	if (al) {

		gfs2_inplace_release(ip);

do_grow_qunlock:

		gfs2_quota_unlock(ip);

do_grow_alloc_put:

		gfs2_alloc_put(ip);

	}

	return error;

}



/**

 * gfs2_truncatei - make a file a given size

 * @ip: the inode

 * @size: the size to make the file

 * @truncator: function to truncate the last partial block

 * gfs2_setattr_size - make a file a given size

 * @inode: the inode

 * @newsize: the size to make the file

 *

 * The file size can grow, shrink, or stay the same size.

 * The file size can grow, shrink, or stay the same size. This

 * is called holding i_mutex and an exclusive glock on the inode

 * in question.

 *

 * Returns: errno

 */



int gfs2_truncatei(struct gfs2_inode *ip, u64 size)

int gfs2_setattr_size(struct inode *inode, u64 newsize)

{

	int error;

	int ret;

	u64 oldsize;



	if (gfs2_assert_warn(GFS2_SB(&ip->i_inode), S_ISREG(ip->i_inode.i_mode)))

		return -EINVAL;

	BUG_ON(!S_ISREG(inode->i_mode));



	if (size > ip->i_disksize)

		error = do_grow(ip, size);

	else if (size < ip->i_disksize)

		error = do_shrink(ip, size);

	else

		/* update time stamps */

		error = do_touch(ip, size);

	ret = inode_newsize_ok(inode, newsize);

	if (ret)

		return ret;



	return error;

	oldsize = inode->i_size;

	if (newsize >= oldsize)

		return do_grow(inode, newsize);



	return do_shrink(inode, oldsize, newsize);

}



int gfs2_truncatei_resume(struct gfs2_inode *ip)

{

	int error;

	error = trunc_dealloc(ip, ip->i_disksize);

	error = trunc_dealloc(ip, i_size_read(&ip->i_inode));

	if (!error)

		error = trunc_end(ip);

	return error;
@@ -1269,7 +1258,7 @@ int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset, 


	shift = sdp->sd_sb.sb_bsize_shift;

	BUG_ON(gfs2_is_dir(ip));

	end_of_file = (ip->i_disksize + sdp->sd_sb.sb_bsize - 1) >> shift;

	end_of_file = (i_size_read(&ip->i_inode) + sdp->sd_sb.sb_bsize - 1) >> shift;

	lblock = offset >> shift;

	lblock_stop = (offset + len + sdp->sd_sb.sb_bsize - 1) >> shift;

	if (lblock_stop > end_of_file)

fs/gfs2/bmap.h

+11 −9
Original line number Diff line number Diff line
@@ -44,14 +44,16 @@ static inline void gfs2_write_calc_reserv(const struct gfs2_inode *ip, 
	}

}



int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page);

int gfs2_block_map(struct inode *inode, sector_t lblock, struct buffer_head *bh, int create);

int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsigned *extlen);



int gfs2_truncatei(struct gfs2_inode *ip, u64 size);

int gfs2_truncatei_resume(struct gfs2_inode *ip);

int gfs2_file_dealloc(struct gfs2_inode *ip);

int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset,

extern int gfs2_unstuff_dinode(struct gfs2_inode *ip, struct page *page);

extern int gfs2_block_map(struct inode *inode, sector_t lblock,

			  struct buffer_head *bh, int create);

extern int gfs2_extent_map(struct inode *inode, u64 lblock, int *new,

			   u64 *dblock, unsigned *extlen);

extern int gfs2_setattr_size(struct inode *inode, u64 size);

extern void gfs2_trim_blocks(struct inode *inode);

extern int gfs2_truncatei_resume(struct gfs2_inode *ip);

extern int gfs2_file_dealloc(struct gfs2_inode *ip);

extern int gfs2_write_alloc_required(struct gfs2_inode *ip, u64 offset,

				     unsigned int len);



#endif /* __BMAP_DOT_H__ */

fs/gfs2/dentry.c

+1 −1
Original line number Diff line number Diff line
@@ -49,7 +49,7 @@ static int gfs2_drevalidate(struct dentry *dentry, struct nameidata *nd) 
		ip = GFS2_I(inode);

	}



	if (sdp->sd_args.ar_localcaching)

	if (sdp->sd_lockstruct.ls_ops->lm_mount == NULL)

		goto valid;



	had_lock = (gfs2_glock_is_locked_by_me(dip->i_gl) != NULL);