diff options
Diffstat (limited to 'fs/ocfs2/ocfs2.h')
| -rw-r--r-- | fs/ocfs2/ocfs2.h | 67 |
1 files changed, 56 insertions, 11 deletions
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h index db8e77cd35d..a860633e833 100644 --- a/fs/ocfs2/ocfs2.h +++ b/fs/ocfs2/ocfs2.h @@ -46,11 +46,6 @@ #include "endian.h" #include "ocfs2_lockid.h" -struct ocfs2_extent_map { - u32 em_clusters; - struct rb_root em_extents; -}; - /* Most user visible OCFS2 inodes will have very few pieces of * metadata, but larger files (including bitmaps, etc) must be taken * into account when designing an access scheme. We allow a small @@ -303,6 +298,13 @@ static inline int ocfs2_should_order_data(struct inode *inode) return 1; } +static inline int ocfs2_sparse_alloc(struct ocfs2_super *osb) +{ + if (osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC) + return 1; + return 0; +} + /* set / clear functions because cluster events can make these happen * in parallel so we want the transitions to be atomic. this also * means that any future flags osb_flags must be protected by spinlock @@ -361,9 +363,9 @@ static inline int ocfs2_mount_local(struct ocfs2_super *osb) typeof(__di) ____di = (__di); \ ocfs2_error((__sb), \ "Dinode # %llu has bad signature %.*s", \ - (unsigned long long)(____di)->i_blkno, 7, \ + (unsigned long long)le64_to_cpu((____di)->i_blkno), 7, \ (____di)->i_signature); \ -} while (0); +} while (0) #define OCFS2_IS_VALID_EXTENT_BLOCK(ptr) \ (!strcmp((ptr)->h_signature, OCFS2_EXTENT_BLOCK_SIGNATURE)) @@ -372,9 +374,9 @@ static inline int ocfs2_mount_local(struct ocfs2_super *osb) typeof(__eb) ____eb = (__eb); \ ocfs2_error((__sb), \ "Extent Block # %llu has bad signature %.*s", \ - (unsigned long long)(____eb)->h_blkno, 7, \ + (unsigned long long)le64_to_cpu((____eb)->h_blkno), 7, \ (____eb)->h_signature); \ -} while (0); +} while (0) #define OCFS2_IS_VALID_GROUP_DESC(ptr) \ (!strcmp((ptr)->bg_signature, OCFS2_GROUP_DESC_SIGNATURE)) @@ -383,9 +385,9 @@ static inline int ocfs2_mount_local(struct ocfs2_super *osb) typeof(__gd) ____gd = (__gd); \ ocfs2_error((__sb), \ "Group Descriptor # %llu has bad signature %.*s", \ - (unsigned long long)(____gd)->bg_blkno, 7, \ + (unsigned long long)le64_to_cpu((____gd)->bg_blkno), 7, \ (____gd)->bg_signature); \ -} while (0); +} while (0) static inline unsigned long ino_from_blkno(struct super_block *sb, u64 blkno) @@ -461,6 +463,49 @@ static inline unsigned long ocfs2_align_bytes_to_sectors(u64 bytes) return (unsigned long)((bytes + 511) >> 9); } +static inline unsigned int ocfs2_page_index_to_clusters(struct super_block *sb, + unsigned long pg_index) +{ + u32 clusters = pg_index; + unsigned int cbits = OCFS2_SB(sb)->s_clustersize_bits; + + if (unlikely(PAGE_CACHE_SHIFT > cbits)) + clusters = pg_index << (PAGE_CACHE_SHIFT - cbits); + else if (PAGE_CACHE_SHIFT < cbits) + clusters = pg_index >> (cbits - PAGE_CACHE_SHIFT); + + return clusters; +} + +/* + * Find the 1st page index which covers the given clusters. + */ +static inline unsigned long ocfs2_align_clusters_to_page_index(struct super_block *sb, + u32 clusters) +{ + unsigned int cbits = OCFS2_SB(sb)->s_clustersize_bits; + unsigned long index = clusters; + + if (PAGE_CACHE_SHIFT > cbits) { + index = clusters >> (PAGE_CACHE_SHIFT - cbits); + } else if (PAGE_CACHE_SHIFT < cbits) { + index = clusters << (cbits - PAGE_CACHE_SHIFT); + } + + return index; +} + +static inline unsigned int ocfs2_pages_per_cluster(struct super_block *sb) +{ + unsigned int cbits = OCFS2_SB(sb)->s_clustersize_bits; + unsigned int pages_per_cluster = 1; + + if (PAGE_CACHE_SHIFT < cbits) + pages_per_cluster = 1 << (cbits - PAGE_CACHE_SHIFT); + + return pages_per_cluster; +} + #define ocfs2_set_bit ext2_set_bit #define ocfs2_clear_bit ext2_clear_bit #define ocfs2_test_bit ext2_test_bit |