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fs: Remove FS_THP_SUPPORT

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Instead of setting a bit in the fs_flags to set a bit in the
address_space, set the bit in the address_space directly.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2021-08-29 06:07:03 -04:00
parent a1efe484dd
commit ff36da69bc
4 changed files with 18 additions and 4 deletions
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1
include/linux/fs.h
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@ -2518,7 +2518,6 @@ struct file_system_type {
#define FS_USERNS_MOUNT 8 /* Can be mounted by userns root */
#define FS_DISALLOW_NOTIFY_PERM 16 /* Disable fanotify permission events */
#define FS_ALLOW_IDMAP 32 /* FS has been updated to handle vfs idmappings. */
#define FS_THP_SUPPORT 8192 /* Remove once all fs converted */
#define FS_RENAME_DOES_D_MOVE 32768 /* FS will handle d_move() during rename() internally. */
int (*init_fs_context)(struct fs_context *);
const struct fs_parameter_spec *parameters;

16
include/linux/pagemap.h
View file

@ -176,6 +176,22 @@ static inline void mapping_set_gfp_mask(struct address_space *m, gfp_t mask)
m->gfp_mask = mask;
}
/**
* mapping_set_large_folios() - Indicate the file supports large folios.
* @mapping: The file.
*
* The filesystem should call this function in its inode constructor to
* indicate that the VFS can use large folios to cache the contents of
* the file.
*
* Context: This should not be called while the inode is active as it
* is non-atomic.
*/
static inline void mapping_set_large_folios(struct address_space *mapping)
{
__set_bit(AS_THP_SUPPORT, &mapping->flags);
}
static inline bool mapping_thp_support(struct address_space *mapping)
{
return test_bit(AS_THP_SUPPORT, &mapping->flags);