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pass a struct path to vfs_statfs

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We'll need the path to implement the flags field for statvfs support.
We do have it available in all callers except:

 - ecryptfs_statfs.  This one doesn't actually need vfs_statfs but just
   needs to do a caller to the lower filesystem statfs method.
 - sys_ustat.  Add a non-exported statfs_by_dentry helper for it which
   doesn't won't be able to fill out the flags field later on.

In addition rename the helpers for statfs vs fstatfs to do_*statfs instead
of the misleading vfs prefix.

Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Christoph Hellwig 2010-07-07 18:53:11 +02:00 • committed by Al Viro
commit ebabe9a900
11 changed files with 67 additions and 46 deletions
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2
fs/cachefiles/bind.c
View file

@ -146,7 +146,7 @@ static int cachefiles_daemon_add_cache(struct cachefiles_cache *cache)
goto error_unsupported;
/* get the cache size and blocksize */
ret = vfs_statfs(root, &stats);
ret = vfs_statfs(&path, &stats);
if (ret < 0)
goto error_unsupported;

6
fs/cachefiles/daemon.c
View file

@ -683,6 +683,10 @@ int cachefiles_has_space(struct cachefiles_cache *cache,
unsigned fnr, unsigned bnr)
{
struct kstatfs stats;
struct path path = {
.mnt = cache->mnt,
.dentry = cache->mnt->mnt_root,
};
int ret;
//_enter("{%llu,%llu,%llu,%llu,%llu,%llu},%u,%u",
@ -697,7 +701,7 @@ int cachefiles_has_space(struct cachefiles_cache *cache,
/* find out how many pages of blockdev are available */
memset(&stats, 0, sizeof(stats));
ret = vfs_statfs(cache->mnt->mnt_root, &stats);
ret = vfs_statfs(&path, &stats);
if (ret < 0) {
if (ret == -EIO)
cachefiles_io_error(cache, "statfs failed");