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| author | Shyam Prasad N <sprasad@microsoft.com> | 2021-08-10 13:22:28 +0300 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2021-08-25 23:45:10 +0300 |
| commit | 18d04062f83b3eedb64e9f64ede26ee83ae7f152 (patch) | |
| tree | c3c3adf374d89c8aac32520463468b715bd7e5e3 /fs/cifs/fscache.h | |
| parent | 3d2b50e0e7682b2453ccfac775ad7c2c1d5ceb45 (diff) | |
| download | linux-18d04062f83b3eedb64e9f64ede26ee83ae7f152.tar.xz | |
cifs: enable fscache usage even for files opened as rw
So far, the fscache implementation we had supports only
a small set of use cases. Particularly for files opened
with O_RDONLY.
This commit enables it even for rw based file opens. It
also enables the reuse of cached data in case of mount
option (cache=singleclient) where it is guaranteed that
this is the only client (and server) which operates on
the files. There's also a single line change in fscache.c
to get around a bug seen in fscache.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Acked-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs/fscache.h')
| -rw-r--r-- | fs/cifs/fscache.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/fs/cifs/fscache.h b/fs/cifs/fscache.h index 3d55cb2ef055..82e856b9cf89 100644 --- a/fs/cifs/fscache.h +++ b/fs/cifs/fscache.h @@ -55,10 +55,13 @@ extern void cifs_fscache_get_super_cookie(struct cifs_tcon *); extern void cifs_fscache_release_super_cookie(struct cifs_tcon *); extern void cifs_fscache_release_inode_cookie(struct inode *); +extern void cifs_fscache_update_inode_cookie(struct inode *inode); extern void cifs_fscache_set_inode_cookie(struct inode *, struct file *); extern void cifs_fscache_reset_inode_cookie(struct inode *); extern void __cifs_fscache_invalidate_page(struct page *, struct inode *); +extern void __cifs_fscache_wait_on_page_write(struct inode *inode, struct page *page); +extern void __cifs_fscache_uncache_page(struct inode *inode, struct page *page); extern int cifs_fscache_release_page(struct page *page, gfp_t gfp); extern int __cifs_readpage_from_fscache(struct inode *, struct page *); extern int __cifs_readpages_from_fscache(struct inode *, @@ -76,6 +79,20 @@ static inline void cifs_fscache_invalidate_page(struct page *page, __cifs_fscache_invalidate_page(page, inode); } +static inline void cifs_fscache_wait_on_page_write(struct inode *inode, + struct page *page) +{ + if (PageFsCache(page)) + __cifs_fscache_wait_on_page_write(inode, page); +} + +static inline void cifs_fscache_uncache_page(struct inode *inode, + struct page *page) +{ + if (PageFsCache(page)) + __cifs_fscache_uncache_page(inode, page); +} + static inline int cifs_readpage_from_fscache(struct inode *inode, struct page *page) { @@ -123,6 +140,7 @@ static inline void cifs_fscache_release_super_cookie(struct cifs_tcon *tcon) {} static inline void cifs_fscache_release_inode_cookie(struct inode *inode) {} +static inline void cifs_fscache_update_inode_cookie(struct inode *inode) {} static inline void cifs_fscache_set_inode_cookie(struct inode *inode, struct file *filp) {} static inline void cifs_fscache_reset_inode_cookie(struct inode *inode) {} @@ -133,6 +151,11 @@ static inline int cifs_fscache_release_page(struct page *page, gfp_t gfp) static inline void cifs_fscache_invalidate_page(struct page *page, struct inode *inode) {} +static inline void cifs_fscache_wait_on_page_write(struct inode *inode, + struct page *page) {} +static inline void cifs_fscache_uncache_page(struct inode *inode, + struct page *page) {} + static inline int cifs_readpage_from_fscache(struct inode *inode, struct page *page) { |