diff options
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index c74b1948feb0..635135e6148e 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -561,15 +561,16 @@ enum { #define EXT4_GET_BLOCKS_NO_PUT_HOLE 0x0200 /* - * The bit position of this flag must not overlap with any of the - * EXT4_GET_BLOCKS_*. It is used by ext4_ext_find_extent(), + * The bit position of these flags must not overlap with any of the + * EXT4_GET_BLOCKS_*. They are used by ext4_ext_find_extent(), * read_extent_tree_block(), ext4_split_extent_at(), - * ext4_ext_insert_extent(), and ext4_ext_create_new_leaf() to - * indicate that the we shouldn't be caching the extents when reading - * from the extent tree while a truncate or punch hole operation - * is in progress. + * ext4_ext_insert_extent(), and ext4_ext_create_new_leaf(). + * EXT4_EX_NOCACHE is used to indicate that the we shouldn't be + * caching the extents when reading from the extent tree while a + * truncate or punch hole operation is in progress. */ #define EXT4_EX_NOCACHE 0x0400 +#define EXT4_EX_FORCE_CACHE 0x0800 /* * Flags used by ext4_free_blocks @@ -601,6 +602,7 @@ enum { #define EXT4_IOC_MOVE_EXT _IOWR('f', 15, struct move_extent) #define EXT4_IOC_RESIZE_FS _IOW('f', 16, __u64) #define EXT4_IOC_SWAP_BOOT _IO('f', 17) +#define EXT4_IOC_PRECACHE_EXTENTS _IO('f', 18) #if defined(__KERNEL__) && defined(CONFIG_COMPAT) /* @@ -1386,6 +1388,7 @@ enum { nolocking */ EXT4_STATE_MAY_INLINE_DATA, /* may have in-inode data */ EXT4_STATE_ORDERED_MODE, /* data=ordered mode */ + EXT4_STATE_EXT_PRECACHED, /* extents have been precached */ }; #define EXT4_INODE_BIT_FNS(name, field, offset) \ @@ -2705,7 +2708,7 @@ extern int ext4_find_delalloc_range(struct inode *inode, extern int ext4_find_delalloc_cluster(struct inode *inode, ext4_lblk_t lblk); extern int ext4_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, __u64 start, __u64 len); - +extern int ext4_ext_precache(struct inode *inode); /* move_extent.c */ extern void ext4_double_down_write_data_sem(struct inode *first, |