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author | Miklos Szeredi <mszeredi@redhat.com> | 2023-08-10 13:45:05 +0300 |
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committer | Miklos Szeredi <mszeredi@redhat.com> | 2023-08-21 13:14:49 +0300 |
commit | d3045530bdd29d91033eea437d8a961f4ee598b5 (patch) | |
tree | 4c5ec116ab28b869b5b4b7b8a0bf13ba4478a269 /fs/fuse/inode.c | |
parent | 9dc10a54abe50b733a5b561d5f8be718e79c3590 (diff) | |
download | linux-d3045530bdd29d91033eea437d8a961f4ee598b5.tar.xz |
fuse: implement statx
Allow querying btime. When btime is requested in mask, then FUSE_STATX
request is sent. Otherwise keep using FUSE_GETATTR.
The userspace interface for statx matches that of the statx(2) API.
However there are limitations on how this interface is used:
- returned basic stats and btime are used, stx_attributes, etc. are
ignored
- always query basic stats and btime, regardless of what was requested
- requested sync type is ignored, the default is passed to the server
- if server returns with some attributes missing from the result_mask,
then no attributes will be cached
- btime is not cached yet (next patch will fix that)
For new inodes initialize fi->inval_mask to "all invalid", instead of "all
valid" as previously. Also only clear basic stats from inval_mask when
caching attributes. This will result in the caching logic not thinking
that btime is cached.
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/fuse/inode.c')
-rw-r--r-- | fs/fuse/inode.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c index 4a16185eacae..2a4d192502e7 100644 --- a/fs/fuse/inode.c +++ b/fs/fuse/inode.c @@ -77,7 +77,7 @@ static struct inode *fuse_alloc_inode(struct super_block *sb) return NULL; fi->i_time = 0; - fi->inval_mask = 0; + fi->inval_mask = ~0; fi->nodeid = 0; fi->nlookup = 0; fi->attr_version = 0; @@ -172,7 +172,8 @@ void fuse_change_attributes_common(struct inode *inode, struct fuse_attr *attr, fi->attr_version = atomic64_inc_return(&fc->attr_version); fi->i_time = attr_valid; - WRITE_ONCE(fi->inval_mask, 0); + /* Clear basic stats from invalid mask */ + set_mask_bits(&fi->inval_mask, STATX_BASIC_STATS, 0); inode->i_ino = fuse_squash_ino(attr->ino); inode->i_mode = (inode->i_mode & S_IFMT) | (attr->mode & 07777); |