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| author | Aditya Kali <adityakali@google.com> | 2011-09-09 23:04:51 (GMT) |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2011-09-09 23:04:51 (GMT) |
| commit | 7b415bf60f6afb0499fd3dc0ee33444f54e28567 (patch) | |
| tree | 9c64fef2b8d60ce64865af6e4c2cc6008026e28c /fs/ext4/ext4.h | |
| parent | 27baebb849d46d901e756e6502b0a65a62e43771 (diff) | |
| download | linux-7b415bf60f6afb0499fd3dc0ee33444f54e28567.tar.xz | |
ext4: Fix bigalloc quota accounting and i_blocks value
With bigalloc changes, the i_blocks value was not correctly set (it was still
set to number of blocks being used, but in case of bigalloc, we want i_blocks
to represent the number of clusters being used). Since the quota subsystem sets
the i_blocks value, this patch fixes the quota accounting and makes sure that
the i_blocks value is set correctly.
Signed-off-by: Aditya Kali <adityakali@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index d258422..a6307f7 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -144,9 +144,17 @@ struct ext4_allocation_request { #define EXT4_MAP_UNWRITTEN (1 << BH_Unwritten) #define EXT4_MAP_BOUNDARY (1 << BH_Boundary) #define EXT4_MAP_UNINIT (1 << BH_Uninit) +/* Sometimes (in the bigalloc case, from ext4_da_get_block_prep) the caller of + * ext4_map_blocks wants to know whether or not the underlying cluster has + * already been accounted for. EXT4_MAP_FROM_CLUSTER conveys to the caller that + * the requested mapping was from previously mapped (or delayed allocated) + * cluster. We use BH_AllocFromCluster only for this flag. BH_AllocFromCluster + * should never appear on buffer_head's state flags. + */ +#define EXT4_MAP_FROM_CLUSTER (1 << BH_AllocFromCluster) #define EXT4_MAP_FLAGS (EXT4_MAP_NEW | EXT4_MAP_MAPPED |\ EXT4_MAP_UNWRITTEN | EXT4_MAP_BOUNDARY |\ - EXT4_MAP_UNINIT) + EXT4_MAP_UNINIT | EXT4_MAP_FROM_CLUSTER) struct ext4_map_blocks { ext4_fsblk_t m_pblk; @@ -1884,6 +1892,7 @@ extern int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf); extern qsize_t *ext4_get_reserved_space(struct inode *inode); extern void ext4_da_update_reserve_space(struct inode *inode, int used, int quota_claim); +extern int ext4_da_reserve_space(struct inode *inode, ext4_lblk_t lblock); /* indirect.c */ extern int ext4_ind_map_blocks(handle_t *handle, struct inode *inode, @@ -2284,6 +2293,11 @@ extern int ext4_multi_mount_protect(struct super_block *, ext4_fsblk_t); enum ext4_state_bits { BH_Uninit /* blocks are allocated but uninitialized on disk */ = BH_JBDPrivateStart, + BH_AllocFromCluster, /* allocated blocks were part of already + * allocated cluster. Note that this flag will + * never, ever appear in a buffer_head's state + * flag. See EXT4_MAP_FROM_CLUSTER to see where + * this is used. */ }; BUFFER_FNS(Uninit, uninit) |