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| author | Christoph Hellwig <hch@lst.de> | 2007-10-21 16:42:13 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-10-22 08:13:20 -0700 |
| commit | 480b116c98344ca246f50aade6eb7aca98151a2f (patch) | |
| tree | 72ba3ba17f8c5a72fbd168d1a963b06e269ad898 /mm | |
| parent | 905251a02eeccc59f8e1d743679b8edadc5f738b (diff) | |
| download | linux-stable-480b116c98344ca246f50aade6eb7aca98151a2f.tar.gz linux-stable-480b116c98344ca246f50aade6eb7aca98151a2f.tar.bz2 linux-stable-480b116c98344ca246f50aade6eb7aca98151a2f.zip | |
shmem: new export ops
I'm not sure what people were thinking when adding support to export tmpfs,
but here's the conversion anyway:
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Neil Brown <neilb@suse.de>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/shmem.c | 35 |
1 files changed, 13 insertions, 22 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index 289dbb0a6fd6..9dd219e6e059 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -2020,33 +2020,25 @@ static int shmem_match(struct inode *ino, void *vfh) return ino->i_ino == inum && fh[0] == ino->i_generation; } -static struct dentry *shmem_get_dentry(struct super_block *sb, void *vfh) +static struct dentry *shmem_fh_to_dentry(struct super_block *sb, + struct fid *fid, int fh_len, int fh_type) { - struct dentry *de = NULL; struct inode *inode; - __u32 *fh = vfh; - __u64 inum = fh[2]; - inum = (inum << 32) | fh[1]; + struct dentry *dentry = NULL; + u64 inum = fid->raw[2]; + inum = (inum << 32) | fid->raw[1]; + + if (fh_len < 3) + return NULL; - inode = ilookup5(sb, (unsigned long)(inum+fh[0]), shmem_match, vfh); + inode = ilookup5(sb, (unsigned long)(inum + fid->raw[0]), + shmem_match, fid->raw); if (inode) { - de = d_find_alias(inode); + dentry = d_find_alias(inode); iput(inode); } - return de? de: ERR_PTR(-ESTALE); -} - -static struct dentry *shmem_decode_fh(struct super_block *sb, __u32 *fh, - int len, int type, - int (*acceptable)(void *context, struct dentry *de), - void *context) -{ - if (len < 3) - return ERR_PTR(-ESTALE); - - return sb->s_export_op->find_exported_dentry(sb, fh, NULL, acceptable, - context); + return dentry; } static int shmem_encode_fh(struct dentry *dentry, __u32 *fh, int *len, @@ -2081,9 +2073,8 @@ static int shmem_encode_fh(struct dentry *dentry, __u32 *fh, int *len, static struct export_operations shmem_export_ops = { .get_parent = shmem_get_parent, - .get_dentry = shmem_get_dentry, .encode_fh = shmem_encode_fh, - .decode_fh = shmem_decode_fh, + .fh_to_dentry = shmem_fh_to_dentry, }; static int shmem_parse_options(char *options, int *mode, uid_t *uid, |