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[GFS2] Use vmalloc() in dir code

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When allocating memory to sort directory entries, use vmalloc()
rather than kmalloc() since for larger directories, the required
size can easily be graeter than the 128k maximum of kmalloc().

Also adding the first steps towards getting the AOP_TRUNCATED_PAGE
return code get in the glock code by flagging all places where we
request a glock and we are holding a page lock.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Steven Whitehouse 2006-04-18 10:09:15 -04:00
parent 4d8012b60e
commit fe1bdedc6c
8 changed files with 12 additions and 10 deletions
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5
fs/gfs2/dir.c
View File

@ -61,6 +61,7 @@
#include <linux/sort.h>
#include <linux/gfs2_ondisk.h>
#include <linux/crc32.h>
#include <linux/vmalloc.h>
#include <asm/semaphore.h>
#include "gfs2.h"
@ -1290,7 +1291,7 @@ static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque,
return 0;
error = -ENOMEM;
larr = kmalloc((leaves + entries) * sizeof(void*), GFP_KERNEL);
larr = vmalloc((leaves + entries) * sizeof(void*));
if (!larr)
goto out;
darr = (const struct gfs2_dirent **)(larr + leaves);
@ -1323,7 +1324,7 @@ static int gfs2_dir_read_leaf(struct inode *inode, u64 *offset, void *opaque,
out_kfree:
for(i = 0; i < leaf; i++)
brelse(larr[i]);
kfree(larr);
vfree(larr);
out:
return error;
}

3
fs/gfs2/glock.c
View File

@ -461,6 +461,9 @@ static void handle_recurse(struct gfs2_holder *gh)
struct gfs2_holder *tmp_gh, *safe;
int found = 0;
printk(KERN_INFO "recursion %016llx, %u\n", gl->gl_name.ln_number,
gl->gl_name.ln_type);
if (gfs2_assert_warn(sdp, gh->gh_owner))
return;

1
fs/gfs2/glock.h
View File

@ -27,6 +27,7 @@
#define GL_SYNC 0x00000800
#define GL_NOCANCEL 0x00001000
#define GL_NEVER_RECURSE 0x00002000
#define GL_AOP 0x00004000
#define GLR_TRYFAILED 13
#define GLR_CANCELED 14

2
fs/gfs2/incore.h
View File

@ -156,7 +156,7 @@ struct gfs2_holder {
struct gfs2_glock *gh_gl;
struct task_struct *gh_owner;
unsigned int gh_state;
int gh_flags;
unsigned gh_flags;
int gh_error;
unsigned long gh_iflags;

2
fs/gfs2/meta_io.c
View File

@ -881,7 +881,7 @@ void gfs2_meta_syncfs(struct gfs2_sbd *sdp)
gfs2_ail1_start(sdp, DIO_ALL);
if (gfs2_ail1_empty(sdp, DIO_ALL))
break;
msleep(100);
msleep(10);
}
}

4
fs/gfs2/ops_address.c
View File

@ -216,7 +216,7 @@ static int gfs2_readpage(struct file *file, struct page *page)
int error;
if (file != &gfs2_internal_file_sentinal) {
gfs2_holder_init(ip->i_gl, LM_ST_SHARED, GL_ATIME, &gh);
gfs2_holder_init(ip->i_gl, LM_ST_SHARED, GL_ATIME|GL_AOP, &gh);
error = gfs2_glock_nq_m_atime(1, &gh);
if (error)
goto out_unlock;
@ -267,7 +267,7 @@ static int gfs2_prepare_write(struct file *file, struct page *page,
loff_t end = ((loff_t)page->index << PAGE_CACHE_SHIFT) + to;
struct gfs2_alloc *al;
gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_ATIME, &ip->i_gh);
gfs2_holder_init(ip->i_gl, LM_ST_EXCLUSIVE, GL_ATIME|GL_AOP, &ip->i_gh);
error = gfs2_glock_nq_m_atime(1, &ip->i_gh);
if (error)
goto out_uninit;

3
fs/gfs2/ops_inode.c
View File

@ -742,8 +742,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
if (error)
goto out_gunlock_q;
error = gfs2_trans_begin(sdp,
sdp->sd_max_dirres +
error = gfs2_trans_begin(sdp, sdp->sd_max_dirres +
al->al_rgd->rd_ri.ri_length +
4 * RES_DINODE + 4 * RES_LEAF +
RES_UNLINKED + RES_STATFS +

2
fs/gfs2/ops_super.c
View File

@ -132,9 +132,7 @@ static void gfs2_put_super(struct super_block *sb)
/* At this point, we're through participating in the lockspace */
gfs2_sys_fs_del(sdp);
vfree(sdp);
sb->s_fs_info = NULL;
}