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fs: Export generic_fadvise() 

Filesystems will need to call this function from their fadvise handlers.

CC: stable@vger.kernel.org
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
alistair/sunxi64-5.4-dsi
Jan Kara 2019-08-29 09:04:11 -07:00 committed by Darrick J. Wong
parent 692fe62433
commit cf1ea0592d
2 changed files with 4 additions and 2 deletions
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2
include/linux/fs.h
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@ -3531,6 +3531,8 @@ extern void inode_nohighmem(struct inode *inode);
/* mm/fadvise.c */ /* mm/fadvise.c */
extern int vfs_fadvise(struct file *file, loff_t offset, loff_t len, extern int vfs_fadvise(struct file *file, loff_t offset, loff_t len,
int advice); int advice);
extern int generic_fadvise(struct file *file, loff_t offset, loff_t len,
int advice);
#if defined(CONFIG_IO_URING) #if defined(CONFIG_IO_URING)
extern struct sock *io_uring_get_socket(struct file *file); extern struct sock *io_uring_get_socket(struct file *file);

4
mm/fadvise.c
View File

@ -27,8 +27,7 @@
* deactivate the pages and clear PG_Referenced. * deactivate the pages and clear PG_Referenced.
*/ */
static int generic_fadvise(struct file *file, loff_t offset, loff_t len, int generic_fadvise(struct file *file, loff_t offset, loff_t len, int advice)
int advice)
{ {
struct inode *inode; struct inode *inode;
struct address_space *mapping; struct address_space *mapping;
@ -178,6 +177,7 @@ static int generic_fadvise(struct file *file, loff_t offset, loff_t len,
} }
return 0; return 0;
} }
EXPORT_SYMBOL(generic_fadvise);
int vfs_fadvise(struct file *file, loff_t offset, loff_t len, int advice) int vfs_fadvise(struct file *file, loff_t offset, loff_t len, int advice)
{ {