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ceph: fix reset_readdir()

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When changing readdir postion, fi->next_offset should be set to 0
if the new postion is not in the first dirfrag.

Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: Alex Elder <elder@linaro.org>
This commit is contained in:
Yan, Zheng 2014-02-28 16:36:09 +08:00
parent f049420607
commit dcd3cc05e5
1 changed files with 6 additions and 3 deletions
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9
fs/ceph/dir.c
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@ -454,7 +454,7 @@ static int ceph_readdir(struct file *file, struct dir_context *ctx)
return 0;
}
static void reset_readdir(struct ceph_file_info *fi)
static void reset_readdir(struct ceph_file_info *fi, unsigned frag)
{
if (fi->last_readdir) {
ceph_mdsc_put_request(fi->last_readdir);
@ -462,7 +462,10 @@ static void reset_readdir(struct ceph_file_info *fi)
}
kfree(fi->last_name);
fi->last_name = NULL;
fi->next_offset = 2; /* compensate for . and .. */
if (ceph_frag_is_leftmost(frag))
fi->next_offset = 2; /* compensate for . and .. */
else
fi->next_offset = 0;
if (fi->dentry) {
dput(fi->dentry);
fi->dentry = NULL;
@ -507,7 +510,7 @@ static loff_t ceph_dir_llseek(struct file *file, loff_t offset, int whence)
fpos_frag(offset) != fi->frag ||
fpos_off(offset) < fi->offset) {
dout("dir_llseek dropping %p content\n", file);
reset_readdir(fi);
reset_readdir(fi, fpos_frag(offset));
}
/* bump dir_release_count if we did a forward seek */