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author | Theodore Ts'o <tytso@mit.edu> | 2014-09-04 18:08:22 -0400 |
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committer | Theodore Ts'o <tytso@mit.edu> | 2014-09-04 18:08:22 -0400 |
commit | 754cfed6bbcfdea6afb14f2686f7f8d71e94d4e2 (patch) | |
tree | b55990b0fb6fbabde6dacb0c9d628e6531cbd8f0 /fs | |
parent | e3cf5d5d9a86df1c5e413bdd3725c25a16ff854c (diff) | |
download | op-kernel-dev-754cfed6bbcfdea6afb14f2686f7f8d71e94d4e2.zip op-kernel-dev-754cfed6bbcfdea6afb14f2686f7f8d71e94d4e2.tar.gz |
ext4: drop the EXT4_STATE_DELALLOC_RESERVED flag
Having done a full regression test, we can now drop the
DELALLOC_RESERVED state flag.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/ext4/ext4.h | 1 | ||||
-rw-r--r-- | fs/ext4/inode.c | 20 | ||||
-rw-r--r-- | fs/ext4/mballoc.c | 10 |
3 files changed, 4 insertions, 27 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 00fd822..4855800 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1400,7 +1400,6 @@ enum { EXT4_STATE_EXT_MIGRATE, /* Inode is migrating */ EXT4_STATE_DIO_UNWRITTEN, /* need convert on dio done*/ EXT4_STATE_NEWENTRY, /* File just added to dir */ - EXT4_STATE_DELALLOC_RESERVED, /* blks already reserved for delalloc */ EXT4_STATE_DIOREAD_LOCK, /* Disable support for dio read nolocking */ EXT4_STATE_MAY_INLINE_DATA, /* may have in-inode data */ diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 4a16b0c..d5dd7d4 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -596,14 +596,6 @@ found: down_write(&EXT4_I(inode)->i_data_sem); /* - * if the caller is from delayed allocation writeout path - * we have already reserved fs blocks for allocation - * let the underlying get_block() function know to - * avoid double accounting - */ - if (flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE) - ext4_set_inode_state(inode, EXT4_STATE_DELALLOC_RESERVED); - /* * We need to check for EXT4 here because migrate * could have changed the inode type in between */ @@ -631,8 +623,6 @@ found: (flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE)) ext4_da_update_reserve_space(inode, retval, 1); } - if (flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE) - ext4_clear_inode_state(inode, EXT4_STATE_DELALLOC_RESERVED); if (retval > 0) { unsigned int status; @@ -2004,12 +1994,10 @@ static int mpage_map_one_extent(handle_t *handle, struct mpage_da_data *mpd) * in data loss. So use reserved blocks to allocate metadata if * possible. * - * We pass in the magic EXT4_GET_BLOCKS_DELALLOC_RESERVE if the blocks - * in question are delalloc blocks. This affects functions in many - * different parts of the allocation call path. This flag exists - * primarily because we don't want to change *many* call functions, so - * ext4_map_blocks() will set the EXT4_STATE_DELALLOC_RESERVED flag - * once the inode's allocation semaphore is taken. + * We pass in the magic EXT4_GET_BLOCKS_DELALLOC_RESERVE if + * the blocks in question are delalloc blocks. This indicates + * that the blocks and quotas has already been checked when + * the data was copied into the page cache. */ get_blocks_flags = EXT4_GET_BLOCKS_CREATE | EXT4_GET_BLOCKS_METADATA_NOFAIL; diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 15dffda..65cca28 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -4410,16 +4410,6 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle, if (IS_NOQUOTA(ar->inode)) ar->flags |= EXT4_MB_USE_ROOT_BLOCKS; - /* - * For delayed allocation, we could skip the ENOSPC and - * EDQUOT check, as blocks and quotas have been already - * reserved when data being copied into pagecache. - */ - if (ext4_test_inode_state(ar->inode, EXT4_STATE_DELALLOC_RESERVED)) { - WARN_ON((ar->flags & EXT4_MB_DELALLOC_RESERVED) == 0); - ar->flags |= EXT4_MB_DELALLOC_RESERVED; - } - if ((ar->flags & EXT4_MB_DELALLOC_RESERVED) == 0) { /* Without delayed allocation we need to verify * there is enough free blocks to do block allocation |