summaryrefslogtreecommitdiff
path: root/fs/ext4/extents.c
diff options
context:
space:
mode:
authorEric Biggers <ebiggers@google.com>2019-12-31 12:04:37 -0600
committerTheodore Ts'o <tytso@mit.edu>2020-01-17 16:24:54 -0500
commitdd6683e6efad2339894575da46bc519646e37c24 (patch)
treee0ae52b2f9d75b460492dad0260b7bc1fc8857d7 /fs/ext4/extents.c
parentfd5fe2535642982af695f2f77bb7dba5d4aa6aa5 (diff)
ext4: remove ext4_{ind,ext}_calc_metadata_amount()
Remove the ext4_ind_calc_metadata_amount() and ext4_ext_calc_metadata_amount() functions, which have been unused since commit 71d4f7d03214 ("ext4: remove metadata reservation checks"). Also remove the i_da_metadata_calc_last_lblock and i_da_metadata_calc_len fields from struct ext4_inode_info, as these were only used by these removed functions. Signed-off-by: Eric Biggers <ebiggers@google.com> Link: https://lore.kernel.org/r/20191231180444.46586-2-ebiggers@kernel.org Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Ritesh Harjani <riteshh@linux.ibm.com> Reviewed-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext4/extents.c')
-rw-r--r--fs/ext4/extents.c47
1 files changed, 0 insertions, 47 deletions
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index ed55ca77e684..e005d9821c0e 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -309,53 +309,6 @@ ext4_force_split_extent_at(handle_t *handle, struct inode *inode,
(nofail ? EXT4_GET_BLOCKS_METADATA_NOFAIL:0));
}
-/*
- * Calculate the number of metadata blocks needed
- * to allocate @blocks
- * Worse case is one block per extent
- */
-int ext4_ext_calc_metadata_amount(struct inode *inode, ext4_lblk_t lblock)
-{
- struct ext4_inode_info *ei = EXT4_I(inode);
- int idxs;
-
- idxs = ((inode->i_sb->s_blocksize - sizeof(struct ext4_extent_header))
- / sizeof(struct ext4_extent_idx));
-
- /*
- * If the new delayed allocation block is contiguous with the
- * previous da block, it can share index blocks with the
- * previous block, so we only need to allocate a new index
- * block every idxs leaf blocks. At ldxs**2 blocks, we need
- * an additional index block, and at ldxs**3 blocks, yet
- * another index blocks.
- */
- if (ei->i_da_metadata_calc_len &&
- ei->i_da_metadata_calc_last_lblock+1 == lblock) {
- int num = 0;
-
- if ((ei->i_da_metadata_calc_len % idxs) == 0)
- num++;
- if ((ei->i_da_metadata_calc_len % (idxs*idxs)) == 0)
- num++;
- if ((ei->i_da_metadata_calc_len % (idxs*idxs*idxs)) == 0) {
- num++;
- ei->i_da_metadata_calc_len = 0;
- } else
- ei->i_da_metadata_calc_len++;
- ei->i_da_metadata_calc_last_lblock++;
- return num;
- }
-
- /*
- * In the worst case we need a new set of index blocks at
- * every level of the inode's extent tree.
- */
- ei->i_da_metadata_calc_len = 1;
- ei->i_da_metadata_calc_last_lblock = lblock;
- return ext_depth(inode) + 1;
-}
-
static int
ext4_ext_max_entries(struct inode *inode, int depth)
{