NFS: Optimise append writes with holes

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If a file is being extended, and we're creating a hole, we might as well
declare the entire page to be up to date.

This patch significantly improves the write performance for sparse files
in the case where lseek(SEEK_END) is used to append several non-contiguous
writes at intervals of < PAGE_SIZE.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

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This commit is contained in:

Trond Myklebust 2008-06-10 18:31:00 -04:00

parent b390c2b55c

commit efc91ed019

2 changed files with 23 additions and 9 deletions

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20

fs/nfs/file.c

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12

fs/nfs/write.c

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