#include <linux/time.h>
#include <linux/capability.h>
#include <linux/fs.h>
#include <linux/jbd2.h>
#include <linux/quotaops.h>
#include <linux/buffer_head.h>
#include "ext4.h"
#include "ext4_jbd2.h"
#include "mballoc.h"
#include <trace/events/ext4.h>
Go to the source code of this file.
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| void | ext4_get_group_no_and_offset (struct super_block *sb, ext4_fsblk_t blocknr, ext4_group_t *blockgrpp, ext4_grpblk_t *offsetp) |
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| unsigned | ext4_num_overhead_clusters (struct super_block *sb, ext4_group_t block_group, struct ext4_group_desc *gdp) |
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| void | ext4_init_block_bitmap (struct super_block *sb, struct buffer_head *bh, ext4_group_t block_group, struct ext4_group_desc *gdp) |
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| unsigned | ext4_free_clusters_after_init (struct super_block *sb, ext4_group_t block_group, struct ext4_group_desc *gdp) |
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| struct ext4_group_desc * | ext4_get_group_desc (struct super_block *sb, ext4_group_t block_group, struct buffer_head **bh) |
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| void | ext4_validate_block_bitmap (struct super_block *sb, struct ext4_group_desc *desc, unsigned int block_group, struct buffer_head *bh) |
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| struct buffer_head * | ext4_read_block_bitmap_nowait (struct super_block *sb, ext4_group_t block_group) |
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| int | ext4_wait_block_bitmap (struct super_block *sb, ext4_group_t block_group, struct buffer_head *bh) |
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| struct buffer_head * | ext4_read_block_bitmap (struct super_block *sb, ext4_group_t block_group) |
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| int | ext4_claim_free_clusters (struct ext4_sb_info *sbi, s64 nclusters, unsigned int flags) |
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| int | ext4_should_retry_alloc (struct super_block *sb, int *retries) |
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| ext4_fsblk_t | ext4_new_meta_blocks (handle_t *handle, struct inode *inode, ext4_fsblk_t goal, unsigned int flags, unsigned long *count, int *errp) |
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| ext4_fsblk_t | ext4_count_free_clusters (struct super_block *sb) |
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| int | ext4_bg_has_super (struct super_block *sb, ext4_group_t group) |
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| unsigned long | ext4_bg_num_gdb (struct super_block *sb, ext4_group_t group) |
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| ext4_fsblk_t | ext4_inode_to_goal_block (struct inode *inode) |
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ext4_bg_has_super - number of blocks used by the superblock in group : superblock for filesystem : group number to check
Return the number of blocks used by the superblock (primary or backup) in this group. Currently this will be only 0 or 1.
Definition at line 674 of file balloc.c.
ext4_bg_num_gdb - number of blocks used by the group table in group : superblock for filesystem : group number to check
Return the number of blocks used by the group descriptor table (primary or backup) in this group. In the future there may be a different number of descriptor blocks in each group.
Definition at line 716 of file balloc.c.
| int ext4_claim_free_clusters |
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struct ext4_sb_info * |
sbi, |
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s64 |
nclusters, |
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unsigned int |
flags |
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) |
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ext4_inode_to_goal_block - return a hint for block allocation : inode for block allocation
Return the ideal location to start allocating blocks for a newly created inode.
Definition at line 762 of file balloc.c.
ext4_read_block_bitmap() : super block : given block group
Read the bitmap for a given block_group,and validate the bits for block/inode/inode tables are set in the bitmaps
Return buffer_head on success or NULL in case of failure.
Definition at line 371 of file balloc.c.
ext4_should_retry_alloc() : super block number of attemps has been made
ext4_should_retry_alloc() is called when ENOSPC is returned, and if it is profitable to retry the operation, this function will wait for the current or committing transaction to complete, and then return TRUE.
if the total number of retries exceed three times, return FALSE.
Definition at line 533 of file balloc.c.
1.8.2