xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

xfs: support the XFS_BTNUM_FINOBT free inode btree type

Browse Source 
Define the AGI fields for the finobt root/level and add magic
numbers. Update the btree code to add support for the new
XFS_BTNUM_FINOBT inode btree.

The finobt root block is reserved immediately following the inobt
root block in the AG. Update XFS_PREALLOC_BLOCKS() to determine the
starting AG data block based on whether finobt support is enabled.

Signed-off-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Brian Foster
2014-04-24 16:00:52 +10:00
committed by Dave Chinner
parent 8e2c84df20
commit aafc3c2465
10 changed files with 156 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
fs/xfs/xfs_ialloc.c
View File

@@ -1488,7 +1488,16 @@ xfs_ialloc_compute_maxlevels(
}
/*
* Log specified fields for the ag hdr (inode section)
* Log specified fields for the ag hdr (inode section). The growth of the agi
* structure over time requires that we interpret the buffer as two logical
* regions delineated by the end of the unlinked list. This is due to the size
* of the hash table and its location in the middle of the agi.
*
* For example, a request to log a field before agi_unlinked and a field after
* agi_unlinked could cause us to log the entire hash table and use an excessive
* amount of log space. To avoid this behavior, log the region up through
* agi_unlinked in one call and the region after agi_unlinked through the end of
* the structure in another.
*/
void
xfs_ialloc_log_agi(
@@ -1511,6 +1520,8 @@ xfs_ialloc_log_agi(
offsetof(xfs_agi_t, agi_newino),
offsetof(xfs_agi_t, agi_dirino),
offsetof(xfs_agi_t, agi_unlinked),
offsetof(xfs_agi_t, agi_free_root),
offsetof(xfs_agi_t, agi_free_level),
sizeof(xfs_agi_t)
};
#ifdef DEBUG
@@ -1519,15 +1530,30 @@ xfs_ialloc_log_agi(
agi = XFS_BUF_TO_AGI(bp);
ASSERT(agi->agi_magicnum == cpu_to_be32(XFS_AGI_MAGIC));
#endif
/*
* Compute byte offsets for the first and last fields.
*/
xfs_btree_offsets(fields, offsets, XFS_AGI_NUM_BITS, &first, &last);
/*
* Log the allocation group inode header buffer.
*/
xfs_trans_buf_set_type(tp, bp, XFS_BLFT_AGI_BUF);
xfs_trans_log_buf(tp, bp, first, last);
/*
* Compute byte offsets for the first and last fields in the first
* region and log the agi buffer. This only logs up through
* agi_unlinked.
*/
if (fields & XFS_AGI_ALL_BITS_R1) {
xfs_btree_offsets(fields, offsets, XFS_AGI_NUM_BITS_R1,
&first, &last);
xfs_trans_log_buf(tp, bp, first, last);
}
/*
* Mask off the bits in the first region and calculate the first and
* last field offsets for any bits in the second region.
*/
fields &= ~XFS_AGI_ALL_BITS_R1;
if (fields) {
xfs_btree_offsets(fields, offsets, XFS_AGI_NUM_BITS_R2,
&first, &last);
xfs_trans_log_buf(tp, bp, first, last);
}
}
#ifdef DEBUG