diff options
| author |   Kirill Tkhai <ktkhai@virtuozzo.com> | 2018-11-09 13:33:22 +0300 |
|---|---|---|
| committer |   Miklos Szeredi <mszeredi@redhat.com> | 2019-02-13 13:15:14 +0100 |
| commit | f15ecfef058d94d03bdb35dcdfda041b3de9d543 (patch) | |
| tree | cb6d8304eb8faa46da4882e71d48a61f33dbe16d /fs/fuse/fuse_i.h | |
| parent | fuse: Convert fc->attr_version into atomic64_t (diff) | |
| download | linux-dev-f15ecfef058d94d03bdb35dcdfda041b3de9d543.tar.xz linux-dev-f15ecfef058d94d03bdb35dcdfda041b3de9d543.zip | |
fuse: Introduce fi->lock to protect write related fields
To minimize contention of fc->lock, this patch introduces a new spinlock
for protection fuse_inode metadata:
fuse_inode:
writectr
writepages
write_files
queued_writes
attr_version
inode:
i_size
i_nlink
i_mtime
i_ctime
Also, it protects the fields changed in fuse_change_attributes_common()
(too many to list).
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/fuse/fuse_i.h')
| -rw-r--r-- | fs/fuse/fuse_i.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 47c7b2238f91..1c610b65b1bf 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -96,7 +96,7 @@ struct fuse_inode { union { /* Write related fields (regular file only) */ struct { - /* Files usable in writepage. Protected by fc->lock */ + /* Files usable in writepage. Protected by fi->lock */ struct list_head write_files; /* Writepages pending on truncate or fsync */ @@ -144,6 +144,9 @@ struct fuse_inode { /** Lock for serializing lookup and readdir for back compatibility*/ struct mutex mutex; + + /** Lock to protect write related fields */ + spinlock_t lock; }; /** FUSE inode state bits */ |