NFS: add readdir cache array

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This patch adds the readdir cache array and functions to retreive the array
stored on a cache page, clear the array by freeing allocated memory, add an
entry to the array, and search the array for a given cookie.

It then modifies readdir to make use of the new cache array.
With the new cache array method, we no longer need some of this code.

Finally, nfs_llseek_dir() will set file->f_pos to a value greater than 0 and
desc->dir_cookie to zero.  When we see this, readdir needs to find the file
at position file->f_pos from the start of the directory.

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

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Bryan Schumaker 2010-09-24 14:48:42 -04:00 • committed by Trond Myklebust

parent 8c7597f6ce

commit d1bacf9eb2

1 changed files with 309 additions and 323 deletions

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fs/nfs/dir.c

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