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Subject[PATCH 01/40] staging/lustre/llite: restore ll_fiemap
Date
From: Peng Tao <tao.peng@emc.com>

It was removed by coan by mistake when first porting the code.

Signed-off-by: Peng Tao <bergwolf@gmail.com>
Signed-off-by: Andreas Dilger <andreas.dilger@intel.com>
---
drivers/staging/lustre/lustre/llite/file.c | 33 ++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)

diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index fb85a58..c5b721c 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -2628,6 +2628,38 @@ int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat)
return ll_getattr_it(mnt, de, &it, stat);
}

+int ll_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
+ __u64 start, __u64 len)
+{
+ int rc;
+ size_t num_bytes;
+ struct ll_user_fiemap *fiemap;
+ unsigned int extent_count = fieinfo->fi_extents_max;
+
+ num_bytes = sizeof(*fiemap) + (extent_count *
+ sizeof(struct ll_fiemap_extent));
+ OBD_ALLOC_LARGE(fiemap, num_bytes);
+
+ if (fiemap == NULL)
+ return -ENOMEM;
+
+ fiemap->fm_flags = fieinfo->fi_flags;
+ fiemap->fm_extent_count = fieinfo->fi_extents_max;
+ fiemap->fm_start = start;
+ fiemap->fm_length = len;
+ memcpy(&fiemap->fm_extents[0], fieinfo->fi_extents_start,
+ sizeof(struct ll_fiemap_extent));
+
+ rc = ll_do_fiemap(inode, fiemap, num_bytes);
+
+ fieinfo->fi_flags = fiemap->fm_flags;
+ fieinfo->fi_extents_mapped = fiemap->fm_mapped_extents;
+ memcpy(fieinfo->fi_extents_start, &fiemap->fm_extents[0],
+ fiemap->fm_mapped_extents * sizeof(struct ll_fiemap_extent));
+
+ OBD_FREE_LARGE(fiemap, num_bytes);
+ return rc;
+}

struct posix_acl * ll_get_acl(struct inode *inode, int type)
{
@@ -2740,6 +2772,7 @@ struct inode_operations ll_file_inode_operations = {
.getxattr = ll_getxattr,
.listxattr = ll_listxattr,
.removexattr = ll_removexattr,
+ .fiemap = ll_fiemap,
.get_acl = ll_get_acl,
};

--
1.7.9.5


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