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path: root/fs/xfs/libxfs/xfs_ag.c
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2020-09-15xfs: store inode btree block counts in AGI headerDarrick J. Wong1-0/+5
Add a btree block usage counters for both inode btrees to the AGI header so that we don't have to walk the entire finobt at mount time to create the per-AG reservations. Signed-off-by: Darrick J. Wong <[email protected]> Reviewed-by: Brian Foster <[email protected]>
2020-07-14xfs: get rid of unnecessary xfs_perag_{get,put} pairsGao Xiang1-2/+2
In the course of some operations, we look up the perag from the mount multiple times to get or change perag information. These are often very short pieces of code, so while the lookup cost is generally low, the cost of the lookup is far higher than the cost of the operation we are doing on the perag. Since we changed buffers to hold references to the perag they are cached in, many modification contexts already hold active references to the perag that are held across these operations. This is especially true for any operation that is serialised by an allocation group header buffer. In these cases, we can just use the buffer's reference to the perag to avoid needing to do lookups to access the perag. This means that many operations don't need to do perag lookups at all to access the perag because they've already looked up objects that own persistent references and hence can use that reference instead. Cc: Dave Chinner <[email protected]> Cc: "Darrick J. Wong" <[email protected]> Signed-off-by: Gao Xiang <[email protected]> Reviewed-by: Darrick J. Wong <[email protected]> Signed-off-by: Darrick J. Wong <[email protected]>
2020-03-11xfs: remove XFS_BUF_TO_SBPChristoph Hellwig1-1/+1
Just dereference bp->b_addr directly and make the code a little simpler and more clear. Signed-off-by: Christoph Hellwig <[email protected]> Reviewed-by: Brian Foster <[email protected]> Reviewed-by: Eric Sandeen <[email protected]> Reviewed-by: Darrick J. Wong <[email protected]> Signed-off-by: Darrick J. Wong <[email protected]>
2020-03-11xfs: remove XFS_BUF_TO_AGFChristoph Hellwig1-3/+3
Just dereference bp->b_addr directly and make the code a little simpler and more clear. Signed-off-by: Christoph Hellwig <[email protected]> Reviewed-by: Eric Sandeen <[email protected]> Reviewed-by: Brian Foster <[email protected]> Reviewed-by: Darrick J. Wong <[email protected]> Signed-off-by: Darrick J. Wong <[email protected]>
2020-03-11xfs: remove XFS_BUF_TO_AGIChristoph Hellwig1-3/+3
Just dereference bp->b_addr directly and make the code a little simpler and more clear. Signed-off-by: Christoph Hellwig <[email protected]> Reviewed-by: Eric Sandeen <[email protected]> Reviewed-by: Brian Foster <[email protected]> Reviewed-by: Darrick J. Wong <[email protected]> Signed-off-by: Darrick J. Wong <[email protected]>
2020-03-11xfs: remove the agfl_bno member from struct xfs_agflChristoph Hellwig1-1/+1
struct xfs_agfl is a header in front of the AGFL entries that exists for CRC enabled file systems. For not CRC enabled file systems the AGFL is simply a list of agbno. Make the CRC case similar to that by just using the list behind the new header. This indirectly solves a problem with modern gcc versions that warn about taking addresses of packed structures (and we have to pack the AGFL given that gcc rounds up structure sizes). Also replace the helper macro to get from a buffer with an inline function in xfs_alloc.h to make the code easier to read. Signed-off-by: Christoph Hellwig <[email protected]> Reviewed-by: Eric Sandeen <[email protected]> Reviewed-by: Brian Foster <[email protected]> Reviewed-by: Darrick J. Wong <[email protected]> Signed-off-by: Darrick J. Wong <[email protected]>
2020-01-26xfs: make xfs_buf_get_uncached return an error codeDarrick J. Wong1-9/+12
Convert xfs_buf_get_uncached() to return numeric error codes like most everywhere else in xfs. Signed-off-by: Darrick J. Wong <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: Dave Chinner <[email protected]>
2019-10-06xfs: remove unused flags arg from xfs_get_aghdr_buf()Eric Sandeen1-3/+2
The flags arg is always passed as zero, so remove it. (xfs_buf_get_uncached takes flags to support XBF_NO_IOACCT for the sb, but that should never be relevant for xfs_get_aghdr_buf) Signed-off-by: Eric Sandeen <[email protected]> Reviewed-by: Carlos Maiolino <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: Darrick J. Wong <[email protected]> Signed-off-by: Darrick J. Wong <[email protected]>
2019-06-28xfs: account for log space when formatting new AGsDarrick J. Wong1-0/+67
When we're writing out a fresh new AG, make sure that we don't list an internal log as free and that we create the rmap for the region. growfs never does this, but we will need it when we hook up mkfs. Signed-off-by: Darrick J. Wong <[email protected]> Reviewed-by: Allison Collins <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]>
2019-06-28xfs: refactor free space btree record initializationDarrick J. Wong1-11/+16
Refactor the code that populates the free space btrees of a new AG so that we can avoid code duplication once things start getting complicated. Signed-off-by: Darrick J. Wong <[email protected]> Reviewed-by: Allison Collins <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]>
2019-06-12xfs: remove unused flag argumentsEric Sandeen1-4/+4
There are several functions which take a flag argument that is only ever passed as "0," so remove these arguments. Signed-off-by: Eric Sandeen <[email protected]> Reviewed-by: Brian Foster <[email protected]> Reviewed-by: Bill O'Donnell <[email protected]> Reviewed-by: Allison Collins <[email protected]> Reviewed-by: Darrick J. Wong <[email protected]> Signed-off-by: Darrick J. Wong <[email protected]>
2019-04-14xfs: report AG health via AG geometry ioctlDarrick J. Wong1-0/+2
Use the AG geometry info ioctl to report health status too. Signed-off-by: Darrick J. Wong <[email protected]> Reviewed-by: Brian Foster <[email protected]>
2019-04-14xfs: add a new ioctl to describe allocation group geometryDarrick J. Wong1-0/+52
Add a new ioctl to describe an allocation group's geometry. Signed-off-by: Darrick J. Wong <[email protected]> Reviewed-by: Brian Foster <[email protected]>
2019-02-11xfs: split up allocation btree verifierBrian Foster1-2/+2
Similar to the inode btree verifier, the same allocation btree verifier structure is shared between the by-bno (bnobt) and by-size (cntbt) btrees. This prevents the ability to distinguish magic values between them. Separate the verifier into two, one for each tree, and assign them appropriately. No functional changes. Signed-off-by: Brian Foster <[email protected]> Reviewed-by: Darrick J. Wong <[email protected]> Signed-off-by: Darrick J. Wong <[email protected]>
2019-02-11xfs: create a separate finobt verifierBrian Foster1-1/+1
The inobt verifier is reused for the inobt and finobt, which prevents the ability to distinguish between magic values on a per-tree basis. Create a separate finobt structure in preparation for changes to enforce the appropriate magic value for the associated tree. This patch has no functional change. Signed-off-by: Brian Foster <[email protected]> Reviewed-by: Darrick J. Wong <[email protected]> Signed-off-by: Darrick J. Wong <[email protected]>
2018-12-12xfs: remove xfs_rmap_ag_owner and friendsDarrick J. Wong1-5/+4
Owner information for static fs metadata can be defined readonly at build time because it never changes across filesystems. This enables us to reduce stack usage (particularly in scrub) because we can use the statically defined oinfo structures. Signed-off-by: Darrick J. Wong <[email protected]> Reviewed-by: Brian Foster <[email protected]>
2018-05-15xfs: factor the ag length extension code into libxfsDave Chinner1-0/+60
Growfs currently manually codes the extension of the last AG in a filesytem during the growfs process. Factor that out of the growfs code and move it into libxfs along with teh rest of the AG header modification code. Signed-Off-By: Dave Chinner <[email protected]> Reviewed-by: Darrick J. Wong <[email protected]> Signed-off-by: Darrick J. Wong <[email protected]>
2018-05-15xfs: move growfs core to libxfsDave Chinner1-0/+404
So it can be shared with userspace (e.g. mkfs) easily. Signed-Off-By: Dave Chinner <[email protected]> Reviewed-by: Darrick J. Wong <[email protected]> Signed-off-by: Darrick J. Wong <[email protected]>
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