Message ID | 20210326003131.32642-3-allison.henderson@oracle.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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Series |
xfsprogs: Delay Ready Attributes
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expand
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diff --git a/libxfs/xfs_inode_fork.c b/libxfs/xfs_inode_fork.c index 0b1af501..83866cd 100644 --- a/libxfs/xfs_inode_fork.c +++ b/libxfs/xfs_inode_fork.c @@ -21,6 +21,7 @@ #include "xfs_da_btree.h" #include "xfs_dir2_priv.h" #include "xfs_attr_leaf.h" +#include "xfs_types.h" kmem_zone_t *xfs_ifork_zone; @@ -726,3 +727,25 @@ xfs_ifork_verify_local_attr( return 0; } + +int +xfs_iext_count_may_overflow( + struct xfs_inode *ip, + int whichfork, + int nr_to_add) +{ + struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); + uint64_t max_exts; + uint64_t nr_exts; + + if (whichfork == XFS_COW_FORK) + return 0; + + max_exts = (whichfork == XFS_ATTR_FORK) ? MAXAEXTNUM : MAXEXTNUM; + + nr_exts = ifp->if_nextents + nr_to_add; + if (nr_exts < ifp->if_nextents || nr_exts > max_exts) + return -EFBIG; + + return 0; +} diff --git a/libxfs/xfs_inode_fork.h b/libxfs/xfs_inode_fork.h index a4953e9..0beb8e2 100644 --- a/libxfs/xfs_inode_fork.h +++ b/libxfs/xfs_inode_fork.h @@ -172,5 +172,7 @@ extern void xfs_ifork_init_cow(struct xfs_inode *ip); int xfs_ifork_verify_local_data(struct xfs_inode *ip); int xfs_ifork_verify_local_attr(struct xfs_inode *ip); +int xfs_iext_count_may_overflow(struct xfs_inode *ip, int whichfork, + int nr_to_add); #endif /* __XFS_INODE_FORK_H__ */