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authorDavid Howells <dhowells@redhat.com>2020-10-21 13:22:19 +0100
committerDavid Howells <dhowells@redhat.com>2020-10-29 13:53:04 +0000
commitfa04a40b169fcee615afbae97f71a09332993f64 (patch)
tree3a6123e3b15b9881cd1227f5c129d5e3f8c36732 /fs/cifs
parentd383e346f97d6bb0d654bb3d63c44ab106d92d29 (diff)
downloadlinux-fa04a40b169fcee615afbae97f71a09332993f64.tar.bz2
afs: Fix to take ref on page when PG_private is set
Fix afs to take a ref on a page when it sets PG_private on it and to drop the ref when removing the flag. Note that in afs_write_begin(), a lot of the time, PG_private is already set on a page to which we're going to add some data. In such a case, we leave the bit set and mustn't increment the page count. As suggested by Matthew Wilcox, use attach/detach_page_private() where possible. Fixes: 31143d5d515e ("AFS: implement basic file write support") Reported-by: Matthew Wilcox (Oracle) <willy@infradead.org> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Diffstat (limited to 'fs/cifs')
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